plant life vs flora

plant life and flora both are nouns.

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

As nouns, plant life and flora are synonyms defined as:

plant life and flora: (botany) a living organism lacking the power of locomotion

Other synonyms of plant life include plant.

plant life (noun)	flora (noun)
(botany) a living organism lacking the power of locomotion	(botany) a living organism lacking the power of locomotion
	all the plant life in a particular region or period