inactivity vs loafing

inactivity and loafing both are nouns.

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

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

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

inactivity (noun)	loafing (noun)
being inactive; being less active	having no employment
a disposition to remain inactive or inert
the state of being inactive