Crew and Rank and file

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

Rank and file and crew are semantically related. In some cases you can use "Rank and file" instead a noun "Crew".

Rank and file noun - The body of the community as contrasted with the elite.

Crew and rank and file are semantically related. Sometimes you can use "Crew" instead a noun phrase "Rank and file".