plant life vs leggy

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

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

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

plant life (adjective)	leggy (adjective)
	having long legs
	(of plants) having tall spindly stems