pigheadedness vs stubbornness

pigheadedness and stubbornness both are nouns.

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

As nouns, pigheadedness and stubbornness are synonyms defined as:

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

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

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