air plant vs flora

air plant and flora both are nouns.

Word	Noun	Adjective	Verb	Adverb
air plant	Yes	No	No	No
flora	Yes	No	No	No

As nouns, flora is a hypernym of air plant; that is, flora is a word with a broader meaning than air plant:

air plant: plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it
flora: (botany) a living organism lacking the power of locomotion

Other hypernyms of air plant include plant, plant life.

air plant (noun)	flora (noun)
plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it	(botany) a living organism lacking the power of locomotion
	all the plant life in a particular region or period