occupation-n; 4 Senses

Sense Number 1: The principal activity that one does to earn money.

Commentary: OCCUPATION[+work]

Examples:
He is not in my current occupation.
And what is your occupation these days?

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: The (period of) control of a country by military forces of a foreign power.

Commentary: OCCUPATION[+military][+event]

Examples:
The German occupation of Paris was a terrible time.
World powers must cease occupation of smaller states.

Mappings:
WordNet 3.0 Sense Numbers: 2, 5

Sense Number 3: Any activity that acquires a person's attention.

Commentary: OCCUPATION[+concentration]

Examples:
He missed the bell because of his occupation with a game.
Her occupation with piano kept her out of trouble.

Mappings:
WordNet 3.0 Sense Numbers: 3

Sense Number 4: The act of occupying or taking possession of a building.

Commentary: OCCUPATION[+building]

Examples:
Occupation of a building without a certificate is illegal.
Their occupation of the hotel was unlawful.

Mappings:
WordNet 3.0 Sense Numbers: 4