implosion vs occlusion

implosion and occlusion both are nouns.

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

As nouns, occlusion is a hypernym of implosion; that is, occlusion is a word with a broader meaning than implosion:

Other hypernyms of implosion include blockage, closure.

implosion (noun)	occlusion (noun)
the initial occluded phase of a stop consonant	the act of blocking
a sudden inward collapse	an obstruction in a pipe or tube
	(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)