comb out vs comb

comb out is not a noun while comb is a noun.

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

As verbs, comb out and comb are synonyms defined as:

Other synonyms of comb out include disentangle.

comb out (noun)	comb (noun)
	the act of drawing a comb through hair
	ciliated comb-like swimming plate of a ctenophore
	the fleshy red crest on the head of the domestic fowl and other gallinaceous birds
	a flat device with narrow pointed teeth on one edge; disentangles or arranges hair
	any of several tools for straightening fibers

comb out (verb)	comb (verb)
smoothen and neaten with or as with a comb	smoothen and neaten with or as with a comb
remove unwanted elements	search thoroughly
	straighten with a comb