Drupes have pits contained within a hard shell (I guess called an endocarp?).
Peach pits look like an almond inside of a walnut shell basically. Avocados just have a really large seed in direct contact with the buttery soft mesocarp.
I don’t know who decided to classify gourds, melons, and citrus fruits as berries, but I imagine they had mischief in mind…






An apple sounds much less appealing when you describe it as an indecent (achoo) swollen receptacle tissue with a soft mesocarp…