continuously vs unendingly

continuously and unendingly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
continuously	No	No	No	Yes
unendingly	No	No	No	Yes

As adverbs, continuously and unendingly are synonyms defined as:

Other synonyms of continuously include ceaselessly, endlessly, incessantly, unceasingly.

continuously (adverb)	unendingly (adverb)
at every point	with unflagging resolve
with unflagging resolve