crepuscle vs twilight

crepuscle and twilight both are nouns.

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

As nouns, crepuscle and twilight are synonyms defined as:

Other synonyms of crepuscle include crepuscule, dusk, evenfall, fall, gloam, gloaming, nightfall.

crepuscle (noun)	twilight (noun)
the time of day immediately following sunset	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

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