dormancy vs vegetation

dormancy and vegetation both are nouns.

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

As nouns, vegetation is a hyponym of dormancy; that is, vegetation is a word with a more specific, narrower meaning than dormancy:

dormancy: quiet and inactive restfulness
vegetation: inactivity that is passive and monotonous, comparable to the inactivity of plant life

dormancy (noun)	vegetation (noun)
quiet and inactive restfulness	inactivity that is passive and monotonous, comparable to the inactivity of plant life
a state of quiet (but possibly temporary) inaction	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