perturb vs trouble

perturb is not a noun while trouble is a noun.

Word	Noun	Adjective	Verb	Adverb
perturb	No	No	Yes	No
trouble	Yes	No	Yes	No

As verbs, perturb and trouble are synonyms defined as:

perturb and trouble: disturb in mind or make uneasy or cause to be worried or alarmed

Other synonyms of perturb include cark, disorder, disquiet, distract, unhinge.

As verbs, trouble is a hypernym of perturb; that is, trouble is a word with a broader meaning than perturb:

Other hypernyms of perturb include disturb, upset.

perturb (noun)	trouble (noun)
	an effort that is inconvenient
	a source of difficulty
	an event causing distress or pain
	an angry disturbance
	a strong feeling of anxiety
	an unwanted pregnancy

perturb (verb)	trouble (verb)
throw into great confusion or disorder	cause bodily suffering to and make sick or indisposed
disturb in mind or make uneasy or cause to be worried or alarmed	disturb in mind or make uneasy or cause to be worried or alarmed
cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull	move deeply
disturb or interfere with the usual path of an electron or atom	to cause inconvenience or discomfort to
	take the trouble to do something; concern oneself