occupant

One that resides in or uses a physical space.

One who holds an office, position, or job.

One who occupies; an inhabitant; especially, one in actual possession, as a tenant, who has actual possession, in distinction from the landlord, who has legal or constructive possession.

More specifically, in law, one who first takes possession of that which has no legal owner.

A prostitute.

One who occupies, or takes possession; one who has the actual use or possession, or is in possession, of a thing.

A prostitute.

A person who occupies a place or a position.

An owner or tenant of a property.

A person sitting in a car or other vehicle.