wastepaper basket vs waste-paper basket

wastepaper basket and waste-paper basket both are nouns.

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

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

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

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

wastepaper basket (noun)	waste-paper 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