occupancy vs occupant

occupancy and occupant both are nouns.

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

occupancy (noun)	occupant (noun)
an act of being a tenant or occupant	someone who lives at a particular place for a prolonged period or who was born there
the act of occupying or taking possession of a building