mobster

As a noun mobster

is a member of a mob or mafia.

As an adjective factious is

of, pertaining to, or caused by factions.

As nouns the difference between mobster and villain

is that mobster is a member of a mob or mafia while villain is (en) a vile, wicked person.

As a verb villain is

(obsolete|transitive) to debase; to degrade.

As nouns the difference between mobster and lothario

is that mobster is a member of a mob or Mafia while Lothario is a man whose chief interest is seducing women.

As nouns the difference between mobster and spy

is that mobster is a member of a mob or mafia while spy is a person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage).

As a verb spy is

to act as a spy.

As nouns the difference between hoodlum and mobster

is that hoodlum is a gangster; a hired thug while mobster is a member of a mob or mafia.

As nouns the difference between rioter and mobster

is that rioter is one who riots; part of the unruly violent crowd causing a riot while mobster is a member of a mob or mafia.

As nouns the difference between terrorist and mobster

is that terrorist is a person, group, or organization that uses violent action, or the threat of violent action, to further political goals while mobster is a member of a mob or Mafia.

As an adjective terrorist

is of or relating to terrorism.

As nouns the difference between mobster and biker

is that mobster is a member of a mob or mafia while biker is a person who rides a bicycle.

As nouns the difference between mobster and bandit

is that mobster is a member of a mob or mafia while bandit is bandit.

As nouns the difference between thug and mobster

is that thug is a criminal with an intimidating and unseemly appearance and mannerisms, who treats others violently and roughly, especially for hire while mobster is a member of a mob or Mafia.