plant life vs naturalise

plant life is a noun but naturalise is not a noun.

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

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

plant life (verb)	naturalise (verb)
	make into a citizen
	make more natural or lifelike
	adopt to another place
	adapt (a wild plant or unclaimed land) to the environment