occupy (Verb) — Keep busy with. ex. "She occupies herself with her butterfly collection"
occupy (Verb) — Live (in a certain place). ex. "he occupies two rooms on the top floor"
occupy (Verb) — Take up all the available space. ex. "The liquid occupies the container"
occupy (Verb) — Be on the mind of.
occupy (Verb) — March aggressively into another's territory by military force for the purposes of conquest and occupation. ex. "Hitler occupied Poland on September 1, 1939"
occupy (Verb) — Require (time or space). ex. "This event occupied a very short time"
occupy (Verb) — Consume all of one's attention or time. ex. "Her interest in butterflies occupies her completely"
occupy (Verb) — Assume, as of positions or roles. ex. "he occupies the position of manager" ex. "the young prince will soon occupy the throne"