Name Puns

Saiya-jins: Vegetables
Brolli: Brocolli
Kakarotto: Carrot
Radditz: Radish
Vegeta: Vegetable

Nameks: Inanimate objects
Piccolo: Flute like instrument
Neil: A nail
Lord Slug: A slug

Others:
Trunks: Pants
Bra: Bra
Chi-Chi: Means breasts in Japanese