Nonreturnable and Throw away

Nonreturnable adjective - That may not be returned.

Throw away and nonreturnable are semantically related. In some cases you can replace term "Throw away" with "Nonreturnable", this adjectives are similar.

Throw away verb - To get rid of as useless or unwanted.

Nonreturnable and throw away are semantically related. You can use "Nonreturnable" instead an adjective "Throw away".