extinction vs inactiveness

extinction and inactiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
extinction	Yes	No	No	No
inactiveness	Yes	No	No	No

As nouns, inactiveness is a hypernym of extinction; that is, inactiveness is a word with a broader meaning than extinction:

Other hypernyms of extinction include inaction, inactivity.

extinction (noun)	inactiveness (noun)
the act of extinguishing; causing to stop burning	a disposition to remain inactive or inert
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus	the state of being inactive
complete annihilation
the reduction of the intensity of radiation as a consequence of absorption and radiation
no longer in existence
no longer active; extinguished