dormancy vs dormant

dormancy is a noun but dormant is not a noun.

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

dormancy (noun)	dormant (noun)
quiet and inactive restfulness
a state of quiet (but possibly temporary) inaction

dormancy (adjective)	dormant (adjective)
	(of e.g. volcanoes) not erupting and not extinct
	in a condition of biological rest or suspended animation
	inactive but capable of becoming active
	lying with head on paws as if sleeping