perpetual vs ceaseless

perpetual and ceaseless both are adjectives.

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

As adjectives, perpetual and ceaseless are synonyms defined as:

perpetual and ceaseless: uninterrupted in time and indefinitely long continuing

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

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