wakeful vs vigilant

wakeful and vigilant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wakeful	No	Yes	No	No
vigilant	No	Yes	No	No

As adjectives, wakeful and vigilant are synonyms defined as:

wakeful and vigilant: carefully observant or attentive; on the lookout for possible danger

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

wakeful (adjective)	vigilant (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