mown vs vegetation

mown is not a noun while vegetation is a noun.

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

mown (noun)	vegetation (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

mown (adjective)	vegetation (adjective)
(used of grass or vegetation) cut down with a hand implement or machine