vigilance vs wakefulness

vigilance and wakefulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
vigilance	Yes	No	No	No
wakefulness	Yes	No	No	No

As nouns, vigilance and wakefulness are synonyms defined as:

vigilance and wakefulness: the process of paying close and continuous attention

Other synonyms of vigilance include alertness, watchfulness.

vigilance (noun)	wakefulness (noun)
vigilant attentiveness	a periodic state during which you are conscious and aware of the world
the process of paying close and continuous attention	the process of paying close and continuous attention
	a temporary state in which you are unable (or unwilling) to sleep