crimping iron vs hair crimper

crimping iron and hair crimper both are nouns.

Word	Noun	Adjective	Verb	Adverb
crimping iron	Yes	No	No	No
hair crimper	Yes	No	No	No

As nouns, crimping iron and hair crimper are synonyms defined as:

crimping iron and hair crimper: An electrical appliance for crimping the hair so that it becomes wavy, often in a sawtooth fashion.

crimping iron (noun)	hair crimper (noun)
An electrical appliance for crimping the hair so that it becomes wavy, often in a sawtooth fashion.	An electrical appliance for crimping the hair so that it becomes wavy, often in a sawtooth fashion.