occupancy vs occupation

occupancy and occupation both are nouns.

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

As nouns, occupancy and occupation are synonyms defined as:

occupancy and occupation: the act of occupying or taking possession of a building

Other synonyms of occupancy include moving in.

occupancy (noun)	occupation (noun)
an act of being a tenant or occupant	the principal activity in your life that you do to earn money
the act of occupying or taking possession of a building	the act of occupying or taking possession of a building
	the control of a country by military forces of a foreign power
	any activity that occupies a person's attention
	the period of time during which a place or position or nation is occupied