stopple vs blockage

stopple and blockage both are nouns.

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

As nouns, blockage is a hypernym of stopple; that is, blockage is a word with a broader meaning than stopple:

Other hypernyms of stopple include block, closure, occlusion, stop, stoppage.

stopple (noun)	blockage (noun)
blockage consisting of an object designed to fill a hole tightly	the act of blocking
	an obstruction in a pipe or tube
	the physical condition of blocking or filling a passage with an obstruction

stopple (verb)	blockage (verb)
close or secure with or as if with a stopper