comb-out vs combing

comb-out and combing both are nouns.

Word	Noun	Adjective	Verb	Adverb
comb-out	Yes	No	No	No
combing	Yes	No	No	No

As nouns, combing is a hypernym of comb-out; that is, combing is a word with a broader meaning than comb-out:

Other hypernyms of comb-out include comb.

comb-out (noun)	combing (noun)
the act of removing tangles from you hair with a comb	the act of drawing a comb through hair
the act of carefully weeding out unwanted things or people