1) Blood 2) Capone 3) Criminal 4) Crook 5) Diamond was one 6) Exclusively Saxon word 7) Exclusively Anglo word 8) Felon 9) Hood 10) Hoodlum 11) Legs Diamond was one 12) Little Caesar 13) Mafioso 14) Malefactor 15) Mob guy 16) Mob member 17) Mobster 18) Noir character 19) One covered by a front 20) One using a heater 1) Capone 2) Criminal 3) Crook 4) Hood 5) Hoodlum 6) Hooligan 7) Mobster 8) Scarface 9) Thug 10) Yakuza 11) Yardie 
A gangster is a criminal who is a member of a gang. Some gangs are considered to be part of organized crime. Gangsters are also called mobsters, a term derived from mob and the suffix -ster. Gangs provide a level of organization and resources that support much larger and more complex criminal transactions than an individual criminal could achieve....[movie] This category contains drivers who competed in the British Formula One Championship. ...
Gangster is Jamaican slang for a criminal, usually an armed robber.
[n] - a criminal who is a member of gang