backboard vs basketball backboard

backboard and basketball backboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
backboard	Yes	No	No	No
basketball backboard	Yes	No	No	No

As nouns, backboard and basketball backboard are synonyms defined as:

backboard and basketball backboard: a raised vertical board with basket attached; used to play basketball

backboard (noun)	basketball backboard (noun)
a board used to support the back of someone or something	a raised vertical board with basket attached; used to play basketball
a raised vertical board with basket attached; used to play basketball