flora vs bush

flora and bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
flora	Yes	No	No	No
bush	Yes	Yes	Yes	No

As nouns, bush is a hyponym of flora; that is, bush is a word with a more specific, narrower meaning than flora:

flora (noun)	bush (noun)
(botany) a living organism lacking the power of locomotion	hair growing in the pubic area
all the plant life in a particular region or period	dense vegetation consisting of stunted trees or bushes
	a large wilderness area
	a low woody perennial plant usually having several major stems

flora (adjective)	bush (adjective)
	not of the highest quality or sophistication

flora (verb)	bush (verb)
	provide with a bushing