genus Quassia vs bitterwood

genus Quassia and bitterwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Quassia	Yes	No	No	No
bitterwood	Yes	No	No	No

genus Quassia (noun)	bitterwood (noun)
tropical trees and shrubs with pinnate leaves and large scarlet flowers; bark is medicinal	handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark
	West Indian tree yielding the drug Jamaica quassia
	medium to large tree of tropical North and South America having odd-pinnate leaves and long panicles of small pale yellow flowers followed by scarlet fruits