surprisal vs perturbation

surprisal and perturbation both are nouns.

Word	Noun	Adjective	Verb	Adverb
surprisal	Yes	No	No	No
perturbation	Yes	No	No	No

As nouns, perturbation is a hypernym of surprisal; that is, perturbation is a word with a broader meaning than surprisal:

Other hypernyms of surprisal include disruption.

surprisal (noun)	perturbation (noun)
the act of surprising someone	the act of causing disorder
	a disposition that is confused or nervous and upset
	activity that is a malfunction, intrusion, or interruption
	(physics) a secondary influence on a system that causes it to deviate slightly
	an unhappy and worried mental state