trouble vs perturb

trouble is a noun but perturb is not a noun.

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

As verbs, trouble and perturb are synonyms defined as:

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

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

As verbs, perturb is a hyponym of trouble; that is, perturb is a word with a more specific, narrower meaning than trouble:

trouble (noun)	perturb (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

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