vigilant vs wakeful

vigilant and wakeful both are adjectives.

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

As adjectives, vigilant and wakeful are synonyms defined as:

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

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

vigilant (adjective)	wakeful (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