e'er vs ever

e'er and ever both are adverbs.

Word	Noun	Adjective	Verb	Adverb
e'er	No	No	No	Yes
ever	No	No	No	Yes

As adverbs, e'er and ever are synonyms defined as:

Other synonyms of e'er include always.

e'er (adverb)	ever (adverb)
at all times; all the time and on every occasion	at all times; all the time and on every occasion
	at any time
	(intensifier for adjectives) very