There tends to be a lot of confusion surrounding these terms and to be honest even a little misuse of them. A vegan diet does not include consumption of any form of animal products and can even be ethically based and extend to products a person will use in their household. On a plant-based diet, a person primarily eats plant-forward foods such as fruits, vegetables, legumes, seeds and nuts but may occasionally eat meat, seafood or dairy. Don't confuse plant-based with whole food, plant-based diet which excludes oil and processed foods and is often used to maintain or lose weight. To learn more about the difference between these types of eating, check out this article by BBC Good Food.