hairdressing vs toiletry

hairdressing and toiletry both are nouns.

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

As nouns, toiletry is a hypernym of hairdressing; that is, toiletry is a word with a broader meaning than hairdressing:

hairdressing: a toiletry for the hair
toiletry: artifacts used in making your toilet (washing and taking care of your body)

Other hypernyms of hairdressing include toilet articles.

hairdressing (noun)	toiletry (noun)
care for the hair: the activity of washing or cutting or curling or arranging the hair	artifacts used in making your toilet (washing and taking care of your body)
a toiletry for the hair