lady of pleasure vs working girl

lady of pleasure and working girl both are nouns.

Word	Noun	Adjective	Verb	Adverb
lady of pleasure	Yes	No	No	No
working girl	Yes	No	No	No

As nouns, lady of pleasure and working girl are synonyms defined as:

lady of pleasure and working girl: a woman who engages in sexual intercourse for money

Other synonyms of lady of pleasure include bawd, cocotte, cyprian, fancy woman, harlot, prostitute, sporting lady, tart, whore, woman of the street.

lady of pleasure (noun)	working girl (noun)
a woman who engages in sexual intercourse for money	a young woman who is employed
	a woman who engages in sexual intercourse for money