slattern vs woman of the street

slattern and woman of the street both are nouns.

Word	Noun	Adjective	Verb	Adverb
slattern	Yes	No	No	No
woman of the street	Yes	No	No	No

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

slattern (noun)	woman of the street (noun)
a dirty untidy woman	a woman who engages in sexual intercourse for money
a prostitute who attracts customers by walking the streets