fancy man vs offender

fancy man and offender both are nouns.

Word	Noun	Adjective	Verb	Adverb
fancy man	Yes	No	No	No
offender	Yes	No	No	No

As nouns, offender is a hypernym of fancy man; that is, offender is a word with a broader meaning than fancy man:

fancy man: someone who procures customers for whores (in England they call a pimp a ponce)
offender: a person who transgresses moral or civil law

Other hypernyms of fancy man include wrongdoer.

fancy man (noun)	offender (noun)
someone who procures customers for whores (in England they call a pimp a ponce)	a person who transgresses moral or civil law
a woman's lover