- Bark applies to the hard covering of trees and woody plants
- Peel is used of the skin or rind of fruit that has been removed, as by stripping potato peel, lemon peel
- Rind applies to the thick, tough covering of certain fruits, as of a watermelon, or of cheeses, bacon, etc.
- Pelt refers to the skin, esp. the untanned skin, of a fur-bearing animal, as of a mink, fox, sheep, etc.
- Hide is used of the tough skins of certain large animals, as of a horse, cow, elephant, etc.
- Skin is the general term for the outer covering of the animal body and for the covering, especially if thin and tight, of certain fruits and vegetables human skin, the skin of a peach