balanoposthitis vs rubor

balanoposthitis and rubor both are nouns.

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

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

balanoposthitis: inflammation of both the head of the penis and the foreskin
rubor: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of balanoposthitis include inflammation, redness.

balanoposthitis (noun)	rubor (noun)
inflammation of both the head of the penis and the foreskin	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat