Nouns

(n)gang, pack, ring, moban association of criminals“police tried to break up the gang”, “a pack of thieves”
(n)crowd, crew, gang, bunchan informal body of friends“he still hangs out with the same crowd”
(n)gang, crew, work partyan organized group of workmen
(n)gangtool consisting of a combination of implements arranged to work together

Verbs

(v)gang, gang upact as an organized group