blockage vs occlusion

blockage and occlusion both are nouns.

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

As nouns, blockage and occlusion are synonyms defined as:

Other synonyms of blockage include closure.

As nouns, blockage and occlusion are synonyms defined as:

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

blockage (noun)	occlusion (noun)
the act of blocking	the act of blocking
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	(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)