habitation vs inhabitancy

habitation and inhabitancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
habitation	Yes	No	No	No
inhabitancy	Yes	No	No	No

As nouns, habitation and inhabitancy are synonyms defined as:

habitation and inhabitancy: the act of dwelling in or living permanently in a place (said of both animals and men)

Other synonyms of habitation include inhabitation.

habitation (noun)	inhabitancy (noun)
the act of dwelling in or living permanently in a place (said of both animals and men)	the act of dwelling in or living permanently in a place (said of both animals and men)
housing that someone is living in
the native habitat or home of an animal or plant