laryngospasm vs occlusion

laryngospasm and occlusion both are nouns.

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

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

laryngospasm: a closure of the larynx that blocks the passage of air to the lungs
occlusion: closure or blockage (as of a blood vessel)

laryngospasm (noun)	occlusion (noun)
a closure of the larynx that blocks the passage of air to the lungs	the act of blocking
	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)