habitation vs occupancy

habitation and occupancy both are nouns.

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

As nouns, occupancy is a hypernym of habitation; that is, occupancy is a word with a broader meaning than habitation:

habitation: the act of dwelling in or living permanently in a place (said of both animals and men)
occupancy: an act of being a tenant or occupant

Other hypernyms of habitation include tenancy.

habitation (noun)	occupancy (noun)
the act of dwelling in or living permanently in a place (said of both animals and men)	an act of being a tenant or occupant
housing that someone is living in	the act of occupying or taking possession of a building
the native habitat or home of an animal or plant