cohabitation vs inhabitation

cohabitation and inhabitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
cohabitation	Yes	No	No	No
inhabitation	Yes	No	No	No

As nouns, inhabitation is a hypernym of cohabitation; that is, inhabitation is a word with a broader meaning than cohabitation:

cohabitation: the act of living together and having a sexual relationship (especially without being married)
inhabitation: the act of dwelling in or living permanently in a place (said of both animals and men)

Other hypernyms of cohabitation include habitation, inhabitancy.

cohabitation (noun)	inhabitation (noun)
the act of living together and having a sexual relationship (especially without being married)	the act of dwelling in or living permanently in a place (said of both animals and men)