true tulipwood vs tulip poplar

true tulipwood and tulip poplar both are nouns.

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

true tulipwood (noun)	tulip 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