nonparticipation vs non-involvement

nonparticipation and non-involvement both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonparticipation	Yes	No	No	No
non-involvement	Yes	No	No	No

As nouns, nonparticipation and non-involvement are synonyms defined as:

nonparticipation and non-involvement: withdrawing from the activities of a group

Other synonyms of nonparticipation include non-engagement.

nonparticipation (noun)	non-involvement (noun)
withdrawing from the activities of a group	withdrawing from the activities of a group