physics vs perturbation

physics and perturbation both are nouns.

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

physics (noun)	perturbation (noun)
the science of matter and energy and their interactions	the act of causing disorder
the physical properties, phenomena, and laws of something	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