stubbornness vs pigheadedness

stubbornness and pigheadedness both are nouns.

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

As nouns, stubbornness and pigheadedness are synonyms defined as:

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

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

stubbornness (noun)	pigheadedness (noun)
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