wastepaper basket vs waste basket

wastepaper basket and waste basket both are nouns.

Word	Noun	Adjective	Verb	Adverb
wastepaper basket	Yes	No	No	No
waste basket	Yes	No	No	No

As nouns, wastepaper basket and waste basket are synonyms defined as:

wastepaper basket and waste basket: a container with an open top; for discarded paper and other rubbish

Other synonyms of wastepaper basket include circular file, waste-paper basket, wastebasket.

wastepaper basket (noun)	waste basket (noun)
a container with an open top; for discarded paper and other rubbish	a container with an open top; for discarded paper and other rubbish