tulip poplar vs true tulipwood

tulip poplar and true tulipwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
tulip poplar	Yes	No	No	No
true tulipwood	Yes	No	No	No

tulip poplar (noun)	true tulipwood (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