hooker vs street girl

hooker and street girl both are nouns.

Word	Noun	Adjective	Verb	Adverb
hooker	Yes	No	No	No
street girl	Yes	No	No	No

As nouns, hooker and street girl are synonyms defined as:

hooker and street girl: a prostitute who attracts customers by walking the streets

Other synonyms of hooker include floozie, floozy, hustler, slattern, streetwalker.

hooker (noun)	street girl (noun)
a prostitute who attracts customers by walking the streets	a prostitute who attracts customers by walking the streets
(rugby) the player in the middle of the front row of the scrum who tries to capture the ball with the foot
a golfer whose shots typically curve left (for right-handed golfers)