incident vs disruption

incident and disruption both are nouns.

Word	Noun	Adjective	Verb	Adverb
incident	Yes	Yes	No	No
disruption	Yes	No	No	No

As nouns, disruption is a hypernym of incident; that is, disruption is a word with a broader meaning than incident:

Other hypernyms of incident include commotion, disturbance, flutter, hoo-ha, hoo-hah, hurly burly, kerfuffle, to-do.

incident (noun)	disruption (noun)
a single distinct event	the act of causing disorder
a public disturbance	an act of delaying or interrupting the continuity
	an event that results in a displacement or discontinuity
	a disorderly outburst or tumult

incident (adjective)	disruption (adjective)
(sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
falling or striking of light rays on something