twilight vision vs night-sight

twilight vision and night-sight both are nouns.

Word	Noun	Adjective	Verb	Adverb
twilight vision	Yes	No	No	No
night-sight	Yes	No	No	No

As nouns, twilight vision and night-sight are synonyms defined as:

twilight vision and night-sight: the ability to see in reduced illumination (as in moonlight)

Other synonyms of twilight vision include night vision, scotopic vision.

twilight vision (noun)	night-sight (noun)
the ability to see in reduced illumination (as in moonlight)	the ability to see in reduced illumination (as in moonlight)