eve vs evening

eve and evening both are nouns.

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

As nouns, eve and evening are synonyms defined as:

eve and evening: the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)

Other synonyms of eve include even, eventide.

eve (noun)	evening (noun)
the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)	the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)
the day before	a later concluding time period
the period immediately before something	the early part of night (from dinner until bedtime) spent in a special way