blockage vs ileus

blockage and ileus both are nouns.

Word	Noun	Adjective	Verb	Adverb
blockage	Yes	No	No	No
ileus	Yes	No	No	No

As nouns, ileus is a hyponym of blockage; that is, ileus is a word with a more specific, narrower meaning than blockage:

blockage: the physical condition of blocking or filling a passage with an obstruction
ileus: blockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowel

Other hyponyms of blockage include intestinal obstruction, tamponade, tamponage.

blockage (noun)	ileus (noun)
the act of blocking	blockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowel
an obstruction in a pipe or tube
the physical condition of blocking or filling a passage with an obstruction