cock vs fighting cock

cock and fighting cock both are nouns.

Word	Noun	Adjective	Verb	Adverb
cock	Yes	No	Yes	No
fighting cock	Yes	No	No	No

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

Other hyponyms of cock include gamecock.

cock (noun)	fighting cock (noun)
adult male bird	a cock bred and trained for fighting
adult male chicken
faucet consisting of a rotating device for regulating flow of a liquid
the part of a gunlock that strikes the percussion cap when the trigger is pulled
obscene terms for penis

cock (verb)	fighting cock (verb)
set the trigger of a firearm back for firing
to walk with a lofty proud gait, often in an attempt to impress others
tilt or slant to one side