fancy man vs lover

fancy man and lover both are nouns.

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

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

fancy man (noun)	lover (noun)
someone who procures customers for whores (in England they call a pimp a ponce)	a person who loves someone or is loved by someone
a woman's lover	an ardent follower and admirer
	a significant other to whom you are not related by marriage