Crew and Sit-in

Crew noun - A group involved in secret or criminal activities.

Sit-in and crew are semantically related. In some cases you can use "Sit-in" instead a noun "Crew".

Sit-in noun - A form of civil disobedience in which demonstrators occupy seats and refuse to move.

Crew and sit-in are semantically related. Sometimes you can use "Crew" instead a noun phrase "Sit-in".