renal colic vs hurting

renal colic and hurting both are nouns.

Word	Noun	Adjective	Verb	Adverb
renal colic	Yes	No	No	No
hurting	Yes	No	No	No

As nouns, hurting is a hypernym of renal colic; that is, hurting is a word with a broader meaning than renal colic:

renal colic: sharp pain in the lower back that radiates into the groin; associated with the passage of a renal calculus through the ureter
hurting: a symptom of some physical hurt or disorder

Other hypernyms of renal colic include pain.

renal colic (noun)	hurting (noun)
sharp pain in the lower back that radiates into the groin; associated with the passage of a renal calculus through the ureter	a symptom of some physical hurt or disorder