vigil vs surveillance

vigil and surveillance both are nouns.

Word	Noun	Adjective	Verb	Adverb
vigil	Yes	No	No	No
surveillance	Yes	No	No	No

As nouns, surveillance is a hypernym of vigil; that is, surveillance is a word with a broader meaning than vigil:

vigil: a purposeful surveillance to guard or observe
surveillance: close observation of a person or group (usually by the police)

vigil (noun)	surveillance (noun)
a purposeful surveillance to guard or observe	close observation of a person or group (usually by the police)
the rite of staying awake for devotional purposes (especially on the eve of a religious festival)
a period of sleeplessness