stoppage vs occlusion

stoppage and occlusion both are nouns.

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

As nouns, stoppage and occlusion are synonyms defined as:

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

stoppage (noun)	occlusion (noun)
the act of stopping something	the act of blocking
an obstruction in a pipe or tube	an obstruction in a pipe or tube
the state of inactivity following an interruption	(dentistry) the normal spatial relation of the teeth when the jaws are closed
	(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
	closure or blockage (as of a blood vessel)