gloaming vs nightfall

gloaming and nightfall both are nouns.

Word	Noun	Adjective	Verb	Adverb
gloaming	Yes	No	No	No
nightfall	Yes	No	No	No

As nouns, gloaming and nightfall are synonyms defined as:

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

gloaming (noun)	nightfall (noun)
the time of day immediately following sunset	the time of day immediately following sunset