fancy woman vs kept woman

fancy woman and kept woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
fancy woman	Yes	No	No	No
kept woman	Yes	No	No	No

As nouns, fancy woman and kept woman are synonyms defined as:

fancy woman and kept woman: an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man

Other synonyms of fancy woman include mistress.

fancy woman (noun)	kept woman (noun)
an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man	an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man
a woman who engages in sexual intercourse for money