haircare vs brushing

haircare and brushing both are nouns.

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

As nouns, brushing is a hyponym of haircare; that is, brushing is a word with a more specific, narrower meaning than haircare:

haircare: care for the hair: the activity of washing or cutting or curling or arranging the hair
brushing: the act of brushing your hair

Other hyponyms of haircare include brush, comb, combing, shampoo, hairweaving.

haircare (noun)	brushing (noun)
care for the hair: the activity of washing or cutting or curling or arranging the hair	the act of brushing your hair
	the act of brushing your teeth