twilit vs twilight

twilit is not a noun while twilight is a noun.

Word	Noun	Adjective	Verb	Adverb
twilit	No	Yes	No	No
twilight	Yes	Yes	No	No

As adjectives, twilit and twilight are synonyms defined as:

Other synonyms of twilit include dusky.

twilit (noun)	twilight (noun)
	the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth
	a condition of decline following successes
	the time of day immediately following sunset

twilit (adjective)	twilight (adjective)
lighted by or as if by twilight	lighted by or as if by twilight