hair crimper vs crimping iron

hair crimper and crimping iron both are nouns.

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

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

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

hair crimper (noun)	crimping iron (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.