sharp-eyed vs argus-eyed

sharp-eyed and argus-eyed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sharp-eyed	No	Yes	No	No
argus-eyed	No	Yes	No	No

As adjectives, sharp-eyed and argus-eyed are synonyms defined as:

Other synonyms of sharp-eyed include hawk-eyed, keen-sighted, lynx-eyed, quick-sighted, sharp-sighted.

sharp-eyed (adjective)	argus-eyed (adjective)
having keen eyesight	carefully observant or attentive; on the lookout for possible danger
keenly perceptive or alert	having very keen vision
having very keen vision