pyloric stenosis vs stricture

pyloric stenosis and stricture both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyloric stenosis	Yes	No	No	No
stricture	Yes	No	No	No

As nouns, stricture is a hypernym of pyloric stenosis; that is, stricture is a word with a broader meaning than pyloric stenosis:

pyloric stenosis: narrowing of the pyloric sphincter that blocks the passage of food from the stomach into the duodenum
stricture: abnormal narrowing of a bodily canal or passageway

Other hypernyms of pyloric stenosis include stenosis.

pyloric stenosis (noun)	stricture (noun)
narrowing of the pyloric sphincter that blocks the passage of food from the stomach into the duodenum	severe criticism
	abnormal narrowing of a bodily canal or passageway