ulitis vs rubor

ulitis and rubor both are nouns.

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

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

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

Other hypernyms of ulitis include inflammation, redness.

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