arteritis vs rubor

arteritis and rubor both are nouns.

Word	Noun	Adjective	Verb	Adverb
arteritis	Yes	No	No	No
rubor	Yes	No	No	No

As nouns, rubor is a hypernym of arteritis; that is, rubor is a word with a broader meaning than arteritis:

arteritis: inflammation of an artery
rubor: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of arteritis include inflammation, redness.

arteritis (noun)	rubor (noun)
inflammation of an artery	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat