vegetation vs vegetive

vegetation is a noun but vegetive is not a noun.

Word	Noun	Adjective	Verb	Adverb
vegetation	Yes	No	No	No
vegetive	No	Yes	No	No

vegetation (noun)	vegetive (noun)
inactivity that is passive and monotonous, comparable to the inactivity of plant life
an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
all the plant life in a particular region or period
the process of growth in plants

vegetation (adjective)	vegetive (adjective)
	of or relating to an activity that is passive and monotonous