comb vs hackle

comb and hackle both are nouns.

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

As verbs, hackle is a hyponym of comb; that is, hackle is a word with a more specific, narrower meaning than comb:

Other hyponyms of comb include roach, currycomb, hatchel, heckle.

comb (noun)	hackle (noun)
the act of drawing a comb through hair	long slender feather on the necks of e.g. turkeys and pheasants
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 (verb)	hackle (verb)
smoothen and neaten with or as with a comb	comb with a heckle
search thoroughly
straighten with a comb