Groupie and Passenger

Groupie noun - An enthusiastic young fan (especially a young woman who follows rock groups around).

Passenger and groupie are semantically related. In some cases you can use "Passenger" instead a noun "Groupie".

Passenger noun - A traveler riding in a vehicle (a boat or bus or car or plane or train etc) but not operating it.

Groupie and passenger are semantically related. Sometimes you can use "Groupie" instead a noun "Passenger".