* Adjective: Describing a person, thing, or quality that is unwilling to change or be persuaded.
* Example: "He was a stubborn child who refused to eat his vegetables."
* Adverb: Describing an action or state in a way that shows a lack of willingness to change or be persuaded.
* Example: "She stubbornly refused to admit she was wrong."
The part of speech depends on how the word is used in a sentence.