Is plant-based the same as vegan?

No. Plant-based describes what a diet mostly consists of; vegan describes an ethical position that extends beyond food to clothing and other animal use. A plant-based product can legally contain animal-derived ingredients unless it also carries a vegan claim.

Why do emissions figures for the same food differ so much?

Because of system boundaries, allocation between co-products, whether land-use change is counted, and the region and year of the underlying data. Two credible studies can differ several-fold without either being wrong.

Do welfare labels mean the animals had a good life?

They mean a specific set of process criteria was audited. Read the standard behind the logo: the clauses on stocking density, enrichment, transport and slaughter tell you far more than the label's name.

How often is this glossary updated?

Entries are revised whenever regulation, certification criteria or the mainstream scientific reading changes, and new terms are added as our desks start using them in reporting.

Glossary — VegEco

Glossary

VegEco publishes plant-based living, animal welfare, climate and sustainability journalism in 33 languages.

29: Terms defined
8: Subject areas
33: Editions

Diet

5 terms

How eating patterns are named — and where the labels blur.

Plant-based diet: A dietary pattern centered on foods from plants — vegetables, fruits, whole grains, legumes, nuts and seeds — with animal products reduced or excluded.
Vegan: A way of living that seeks to exclude, as far as possible, all forms of exploitation of animals — including in food, clothing and other uses.
Vegetarian: A diet that excludes meat, poultry and fish but may include dairy and eggs (lacto-ovo).
Flexitarian: A mostly plant-based eating pattern that occasionally includes meat or fish.
Whole-food plant-based (WFPB): A plant-based diet emphasizing minimally processed whole foods and limiting oils, refined sugar and refined flour.

Nutrition

4 terms

The nutrients that come up in every plant-based debate.

Complete protein: A protein source that provides all nine essential amino acids in sufficient amounts; combinations of legumes and grains achieve this over the day.
Vitamin B12: An essential vitamin produced by bacteria; reliably supplemented or obtained from fortified foods on plant-based diets.
Omega-3 (ALA / EPA / DHA): Essential fatty acids; ALA is found in flax, chia and walnuts. EPA/DHA can be obtained from algae oil.
Heme vs non-heme iron: Heme iron comes from animal foods; non-heme iron from plants. Absorption of non-heme iron is enhanced by vitamin C.

Animals

5 terms

The vocabulary of confinement, sentience and welfare law.

Factory farming: Industrial-scale animal agriculture that concentrates animals in confinement to maximize output at low unit cost.
CAFO: Concentrated Animal Feeding Operation — a US regulatory term for the largest confinement livestock facilities.
Sentience: The capacity to feel, perceive or experience subjectively — recognized in vertebrates and many invertebrates by contemporary science.
Speciesism: The assumption of moral superiority of one species (usually humans) over others, often used to justify exploitation.
Cage-free / free-range: Labels regulating hen housing; both permit indoor confinement and are not synonymous with high-welfare or pasture-raised.

Climate

5 terms

Emissions accounting terms used in food-system research.

GHG (greenhouse gas): Gases such as CO₂, methane (CH₄) and nitrous oxide (N₂O) that trap heat in the atmosphere and drive global warming.
CO₂-equivalent (CO₂e): A common metric that converts different greenhouse gases to the warming effect of an equivalent mass of CO₂.
Enteric methane: Methane produced by microbial fermentation in the stomachs of ruminants such as cattle and sheep.
Carbon footprint: The total greenhouse gas emissions caused directly and indirectly by a person, product or activity.
Land-use change: Conversion of ecosystems (often forests) to agriculture or pasture — a major driver of biodiversity loss and emissions.

Sustainability

4 terms

Systems language for waste, soil and supply chains.

Circular economy: An economic model designed to eliminate waste by keeping materials in use through reuse, repair and recycling.
Regenerative agriculture: Farming practices that aim to restore soil health, biodiversity and water cycles rather than merely sustain them.
Food miles: The distance food travels from producer to consumer — one of several factors in a product's environmental impact.
Zero waste: A design philosophy aiming to send nothing to landfill or incineration by preventing waste at the source.

Ocean

2 terms

Fisheries and marine ecosystem terminology.

Bycatch: Non-target marine species caught unintentionally during commercial fishing.
Overfishing: Removing fish faster than populations can reproduce, degrading marine ecosystems and food security.

Fashion

2 terms

Materials and business models behind what we wear.

Fast fashion: A business model producing high volumes of low-cost, rapidly changing clothing, with heavy environmental and labour costs.
Vegan leather: Leather alternatives made from plant materials (cactus, pineapple, apple), recycled polyurethane or bio-based films.

Labels

2 terms

What certification marks legally guarantee — and don't.

Certified Vegan: A third-party label indicating a product contains no animal-derived ingredients and was not tested on animals.
Fair Trade: Certification that goods were produced under standards for wages, working conditions and community investment.

How we define these terms

Definitions follow the wording used by regulators, peer-reviewed research and certification bodies wherever one exists. Where a term is contested or marketing-led, we say so instead of picking a side.

Keep reading

These terms show up throughout our reporting on factory farming, animal rights and the climate cost of animal agriculture.

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Commonly confused terms and what actually separates them

Debates about diet, farming and climate stall on vocabulary more often than on evidence. "Plant-based" means one thing on a supermarket label and another in a nutrition trial; "free-range" is a legal definition in some countries and a marketing adjective in others; "carbon neutral" can describe a genuine reduction or an offset purchased after the fact. This glossary fixes the meanings we use across every VegEco edition so our reporting stays consistent.

Each entry is written to be usable, not merely correct: it says what the term covers, where its boundaries are contested, and what to check before accepting a claim built on it. Terms are grouped by domain — diet, animal welfare, farming systems, climate science and labelling — because the same word can carry different weight in each.

Why definitions decide the argument

Most published disagreements about the footprint of food are definitional rather than empirical. Two studies can report emissions per kilogram of a product that differ by a factor of four purely because one counts land-use change and the other does not, or because one stops at the farm gate while the other follows the product to the plate. Before comparing two numbers, confirm they measure the same system, over the same boundary, in the same year. If a source will not tell you its boundary, the number is not comparable to anything.

Labels, certifications and what they guarantee

A certification is a promise about a process, not usually about an outcome. Welfare schemes typically specify stocking density, enrichment or slaughter method; organic schemes specify inputs; carbon labels specify an accounting method. None of them guarantees the thing shoppers usually infer. The practical test is to look up the standard behind the logo and read the clause that matters to you — most schemes publish their full criteria, and the gap between the logo's implication and the clause's text is where most misreading happens.

Terms that change meaning across regions

Regulation is local, so vocabulary is too. Cage-free, pasture-raised, humane, natural and even vegan are defined in statute in some jurisdictions and unregulated in others, and the same phrase can be translated into a term with a stronger or weaker legal meaning. Because every VegEco edition is written natively rather than machine-translated, each edition uses the term its own readers will meet on their own packaging — so a definition here may differ in emphasis from the equivalent entry in another language.

Commonly confused terms and what actually separates them
Term	What it covers	What it does not
Plant-based	A dietary pattern centred on plants	Guarantee zero animal ingredients
Vegan	Excluding animal use as far as practicable	Say anything about nutrition or footprint
Free-range	Some outdoor access, defined locally	Specify space, duration or flock size
Carbon neutral	Net figure after offsets	Prove an absolute emissions cut
Regenerative	Practices aimed at soil health	A single audited standard

Commonly confused terms and what actually separates them

FAQ

Is plant-based the same as vegan?: No. Plant-based describes what a diet mostly consists of; vegan describes an ethical position that extends beyond food to clothing and other animal use. A plant-based product can legally contain animal-derived ingredients unless it also carries a vegan claim.
Why do emissions figures for the same food differ so much?: Because of system boundaries, allocation between co-products, whether land-use change is counted, and the region and year of the underlying data. Two credible studies can differ several-fold without either being wrong.
Do welfare labels mean the animals had a good life?: They mean a specific set of process criteria was audited. Read the standard behind the logo: the clauses on stocking density, enrichment, transport and slaughter tell you far more than the label's name.
How often is this glossary updated?: Entries are revised whenever regulation, certification criteria or the mainstream scientific reading changes, and new terms are added as our desks start using them in reporting.