hair curler vs curler

hair curler and curler both are nouns.

Word	Noun	Adjective	Verb	Adverb
hair curler	Yes	No	No	No
curler	Yes	No	No	No

As nouns, hair curler and curler are synonyms defined as:

hair curler and curler: a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it

Other synonyms of hair curler include crimper, roller.

hair curler (noun)	curler (noun)
a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it	a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it