inactivity vs pause

inactivity and pause both are nouns.

Word	Noun	Adjective	Verb	Adverb
inactivity	Yes	No	No	No
pause	Yes	No	Yes	No

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

Other hyponyms of inactivity include wait, waiting, ease, relaxation, repose, rest, idleness, idling, loafing, delay, holdup.

inactivity (noun)	pause (noun)
being inactive; being less active	temporary inactivity
a disposition to remain inactive or inert	a time interval during which there is a temporary cessation of something
the state of being inactive

inactivity (verb)	pause (verb)
	cease an action temporarily
	interrupt temporarily an activity before continuing