pertinacious vs persistent

pertinacious and persistent both are adjectives.

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

As adjectives, pertinacious and persistent are synonyms defined as:

Other synonyms of pertinacious include dogged, dour, tenacious, unyielding.

pertinacious (adjective)	persistent (adjective)
stubbornly unyielding	retained; not shed
	never-ceasing
	stubbornly unyielding
	continually recurring to the mind