argus-eyed vs sharp-sighted

argus-eyed and sharp-sighted both are adjectives.

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

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

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

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