occupation

The act of occupying or taking possession of a building.

“occupation of a building without a certificate of occupancy is illegal”

The control of a country by military forces of a foreign power.

The principal activity in your life that you do to earn money.

Any activity that occupies a person's attention.

“he missed the bell in his occupation with the computer game”

The period of time during which a place or position or nation is occupied.

“during the German occupation of Paris”