unceasing vs perpetual

unceasing and perpetual both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unceasing	No	Yes	No	No
perpetual	No	Yes	No	No

As adjectives, unceasing and perpetual are synonyms defined as:

unceasing and perpetual: uninterrupted in time and indefinitely long continuing

Other synonyms of unceasing include ceaseless, constant, incessant, never-ending, unremitting.

As adjectives, unceasing and perpetual are synonyms defined as:

Other synonyms of unceasing include aeonian, ageless, eonian, eternal, everlasting, unending.

unceasing (adjective)	perpetual (adjective)
uninterrupted in time and indefinitely long continuing	uninterrupted in time and indefinitely long continuing
continuing forever or indefinitely	continuing forever or indefinitely