eve vs nightfall

eve and nightfall both are nouns.

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

eve (noun)	nightfall (noun)
the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)	the time of day immediately following sunset
the day before
the period immediately before something