What ? I’ve study botany and the term fruit is used extensively.

A fruit is the heterozygotic offspring of the parent plant. A seed is the male zygote, with the female zygote being pollen. So “seed” oils are made from fruit, just like olive oil.

A tuber (potato) or rhyzome (ginger) is a homozygotic offspring. A vegetable is a part of the plant that is not the offspring, like the leaves, stem or root.