wakeful vs open-eyed

wakeful and open-eyed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wakeful	No	Yes	No	No
open-eyed	No	Yes	No	No

As adjectives, wakeful and open-eyed are synonyms defined as:

wakeful and open-eyed: carefully observant or attentive; on the lookout for possible danger

Other synonyms of wakeful include argus-eyed, vigilant, watchful.

wakeful (adjective)	open-eyed (adjective)
carefully observant or attentive; on the lookout for possible danger	carefully observant or attentive; on the lookout for possible danger
marked by full consciousness or alertness
(of sleep) easily disturbed