blockage vs stoppage

blockage and stoppage both are nouns.

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

As nouns, blockage and stoppage are synonyms defined as:

Other synonyms of blockage include block, closure, occlusion, stop.

blockage (noun)	stoppage (noun)
the act of blocking	the act of stopping something
an obstruction in a pipe or tube	an obstruction in a pipe or tube
the physical condition of blocking or filling a passage with an obstruction	the state of inactivity following an interruption