self-will vs rabidity

self-will and rabidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-will	Yes	No	No	No
rabidity	Yes	No	No	No

As nouns, rabidity is a hyponym of self-will; that is, rabidity is a word with a more specific, narrower meaning than self-will:

self-will: resolute adherence to your own ideas or desires
rabidity: The property of being very extreme, unreasonable, or fanatical in opinion; excessively zealous; comparable to one with rabies.

Other hyponyms of self-will include impenitence, impenitency, intransigence, intransigency.

self-will (noun)	rabidity (noun)
resolute adherence to your own ideas or desires	unrestrained excitement or enthusiasm
the trait of resolutely controlling your own behavior	The property of being very extreme, unreasonable, or fanatical in opinion; excessively zealous; comparable to one with rabies.