perseverance vs pertinacity

perseverance and pertinacity both are nouns.

Word	Noun	Adjective	Verb	Adverb
perseverance	Yes	No	No	No
pertinacity	Yes	No	No	No

As nouns, perseverance and pertinacity are synonyms defined as:

Other synonyms of perseverance include doggedness, persistence, persistency, tenaciousness, tenacity.

perseverance (noun)	pertinacity (noun)
the act of persisting or persevering; continuing or repeating behavior	persistent determination
persistent determination