stubbornness vs mulishness

stubbornness and mulishness both are nouns.

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

As nouns, stubbornness and mulishness are synonyms defined as:

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

Other synonyms of stubbornness include obstinacy, obstinance.

stubbornness (noun)	mulishness (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