glossitis vs rubor

glossitis and rubor both are nouns.

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

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

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

Other hypernyms of glossitis include inflammation, redness.

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