sharpshooter vs deadeye

sharpshooter and deadeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharpshooter	Yes	No	No	No
deadeye	Yes	No	No	No

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

Other hyponyms of sharpshooter include franc-tireur, rifleman, sniper.

sharpshooter (noun)	deadeye (noun)
a fast schooner once used by New England fisherman for illegal fishing in Canadian waters	(nautical) a round hardwood disk with holes and a grooved perimeter used to tighten a shroud
someone skilled in shooting	a dead shot
an athlete noted for accurate aim