wiseguy

As a noun wiseguy

is .

As an initialism mob is

(nautical) m'an '''o'''ver ' b oard, used eg on the emergency button of a satellite navigator by pushing the button the operator stores the coordinates of a man overboard incident for easy access.

As nouns the difference between gangster and wiseguy

is that gangster is a member of a criminal or street gang while wiseguy is an alternative spelling of wise guy.

As nouns the difference between taxonomy and wiseguy

is that taxonomy is the science or the technique used to make a classification while wiseguy is .