whitewood vs yellow poplar

whitewood and yellow poplar both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitewood	Yes	No	No	No
yellow poplar	Yes	No	No	No

As nouns, whitewood and yellow poplar are synonyms defined as:

whitewood and yellow poplar: light easily worked wood of a tulip tree; used for furniture and veneer

Other synonyms of whitewood include true tulipwood, tulipwood, white poplar.

whitewood (noun)	yellow poplar (noun)
light easily worked wood of a tulip tree; used for furniture and veneer	tall North American deciduous timber tree having large tulip-shaped greenish yellow flowers and conelike fruit; yields soft white woods used especially for cabinet work
	light easily worked wood of a tulip tree; used for furniture and veneer