doll vs young lady

doll and young lady both are nouns.

Word	Noun	Adjective	Verb	Adverb
doll	Yes	No	No	No
young lady	Yes	No	No	No

As nouns, young lady is a hypernym of doll; that is, young lady is a word with a broader meaning than doll:

Other hypernyms of doll include fille, girl, miss, missy, young woman.

doll (noun)	young lady (noun)
a small replica of a person; used as a toy	a young female
informal terms for a (young) woman