gangster's moll vs felon

gangster's moll and felon both are nouns.

Word	Noun	Adjective	Verb	Adverb
gangster's moll	Yes	No	No	No
felon	Yes	No	No	No

As nouns, felon is a hypernym of gangster's moll; that is, felon is a word with a broader meaning than gangster's moll:

gangster's moll: the girlfriend of a gangster
felon: someone who has committed a crime or has been legally convicted of a crime

Other hypernyms of gangster's moll include criminal, crook, malefactor, outlaw.

gangster's moll (noun)	felon (noun)
the girlfriend of a gangster	someone who has committed a crime or has been legally convicted of a crime
	a purulent infection at the end of a finger or toe in the area surrounding the nail