yellow poplar vs whitewood

yellow poplar and whitewood both are nouns.

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

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

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

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

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