everlastingly vs evermore

everlastingly and evermore both are adverbs.

Word	Noun	Adjective	Verb	Adverb
everlastingly	No	No	No	Yes
evermore	No	No	No	Yes

As adverbs, everlastingly and evermore are synonyms defined as:

Other synonyms of everlastingly include eternally, forever.

everlastingly (adverb)	evermore (adverb)
for a limitless time	for a limitless time
	at any future time; in the future