Meaning : Act as an organized group.
Meaning : An association of criminals.
Police tried to break up the gang.
A pack of thieves.
mob, pack, ring
Meaning : An informal body of friends.
He still hangs out with the same crowd.
bunch, crew, crowd
Meaning : An organized group of workmen.
crew, work party
Meaning : Tool consisting of a combination of implements arranged to work together.