rag doll vs doll

rag doll and doll both are nouns.

Word	Noun	Adjective	Verb	Adverb
rag doll	Yes	No	No	No
doll	Yes	No	No	No

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

Other hypernyms of rag doll include dolly.

rag doll (noun)	doll (noun)
a cloth doll that is stuffed and (usually) painted	a small replica of a person; used as a toy
	informal terms for a (young) woman