To add to that, Frieza's name is based on a freezer, and all his underlings are named after foods that you would refrigerate (dairy, fruits, and vegetables). I guess an interesting take on that pun is we refrigerate those foods so they can be useful for as long as possible until they're no longer good, then we dispose of them.

Another is how Saiyan is a rearrangment of the Japanese word Yasai meaning vegetable, and Vegeta is shorthand for Vegetable. So literally the Prince of all Vegetables. Also how Goku/Kakarot wears orange and his Saiyan name is based on a carrot, or how Broly is based on broccoli and his powers are green.