cultivate vs plant life

cultivate is not a noun while plant life is a noun.

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

cultivate (noun)	plant life (noun)
	(botany) a living organism lacking the power of locomotion

cultivate (verb)	plant life (verb)
adapt (a wild plant or unclaimed land) to the environment
prepare for crops
teach or refine to be discriminative in taste or judgment
promote the growth of