perturbation vs disturbance

perturbation and disturbance both are nouns.

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

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

perturbation: the act of causing disorder
disturbance: the act of disturbing something or someone; setting something in motion

As nouns, perturbation and disturbance are synonyms defined as:

perturbation and disturbance: activity that is a malfunction, intrusion, or interruption

As nouns, perturbation and disturbance are synonyms defined as:

Other synonyms of perturbation include upset.

perturbation (noun)	disturbance (noun)
the act of causing disorder	the act of disturbing something or someone; setting something in motion
a disposition that is confused or nervous and upset	a noisy fight
activity that is a malfunction, intrusion, or interruption	activity that is a malfunction, intrusion, or interruption
(physics) a secondary influence on a system that causes it to deviate slightly	electrical or acoustic activity that can disturb communication
an unhappy and worried mental state	a disorderly outburst or tumult
	(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness
	an unhappy and worried mental state