wastepaper basket vs wastebasket

wastepaper basket and wastebasket both are nouns.

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

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

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

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

wastepaper basket (noun)	wastebasket (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