dormant vs quiescency

dormant is not a noun while quiescency is a noun.

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

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

dormant (adjective)	quiescency (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