tracheitis vs rubor

tracheitis and rubor both are nouns.

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

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

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

Other hypernyms of tracheitis include inflammation, redness.

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