One who commutes (etymology 1).
To and from work and home.
Using public transport.
Normally a short form of commuter rail, commuter train or commuter bus; A transport system or a vehicle in such systems used to transport commuters (#2)
Someone who travels for pleasure rather than for business.
A member of the visiting team in a match.
One who visits a place or attends a social event out of curiosity, wanting to watch without commitment or involvement.