blow drier vs hair drier

blow drier and hair drier both are nouns.

Word	Noun	Adjective	Verb	Adverb
blow drier	Yes	No	No	No
hair drier	Yes	No	No	No

As nouns, blow drier and hair drier are synonyms defined as:

blow drier and hair drier: a hand-held electric blower that can blow warm air onto the hair; used for styling hair

Other synonyms of blow drier include blow dryer, hair dryer, hand blower.

blow drier (noun)	hair drier (noun)
a hand-held electric blower that can blow warm air onto the hair; used for styling hair	a hand-held electric blower that can blow warm air onto the hair; used for styling hair