bullheadedness vs obstinance

bullheadedness and obstinance both are nouns.

Word	Noun	Adjective	Verb	Adverb
bullheadedness	Yes	No	No	No
obstinance	Yes	No	No	No

As nouns, bullheadedness and obstinance are synonyms defined as:

bullheadedness and obstinance: resolute adherence to your own ideas or desires

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

bullheadedness (noun)	obstinance (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