stubbornness vs obstinacy

stubbornness and obstinacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
stubbornness	Yes	No	No	No
obstinacy	Yes	No	No	No

As nouns, stubbornness and obstinacy are synonyms defined as:

stubbornness and obstinacy: the trait of being difficult to handle or overcome

Other synonyms of stubbornness include mulishness, obstinance.

As nouns, stubbornness and obstinacy are synonyms defined as:

stubbornness and obstinacy: resolute adherence to your own ideas or desires

Other synonyms of stubbornness include bullheadedness, obstinance, pigheadedness, self-will.

stubbornness (noun)	obstinacy (noun)
the trait of being difficult to handle or overcome	the trait of being difficult to handle or overcome
resolute adherence to your own ideas or desires	resolute adherence to your own ideas or desires