slattern vs fancy woman

slattern and fancy woman both are nouns.

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

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

slattern (noun)	fancy woman (noun)
a dirty untidy woman	an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man
a prostitute who attracts customers by walking the streets	a woman who engages in sexual intercourse for money