otitis vs rubor

otitis and rubor both are nouns.

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

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

otitis: inflammation of the ear
rubor: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of otitis include inflammation, redness.

otitis (noun)	rubor (noun)
inflammation of the ear	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat