hairdressing vs haircare

hairdressing and haircare both are nouns.

Word	Noun	Adjective	Verb	Adverb
hairdressing	Yes	No	No	No
haircare	Yes	No	No	No

As nouns, hairdressing and haircare are synonyms defined as:

hairdressing and haircare: care for the hair: the activity of washing or cutting or curling or arranging the hair

Other synonyms of hairdressing include hair care.

hairdressing (noun)	haircare (noun)
care for the hair: the activity of washing or cutting or curling or arranging the hair	care for the hair: the activity of washing or cutting or curling or arranging the hair
a toiletry for the hair