obstinance vs bullheadedness

obstinance and bullheadedness both are nouns.

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

As nouns, obstinance and bullheadedness are synonyms defined as:

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

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

obstinance (noun)	bullheadedness (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