continual vs persistent

continual and persistent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
continual	No	Yes	No	No
persistent	No	Yes	No	No

continual (adjective)	persistent (adjective)
recurring regularly or frequently in a prolonged and closely spaced series	retained; not shed
having no interruptions	never-ceasing
	stubbornly unyielding
	continually recurring to the mind