extort vs pluck

extort is not a noun while pluck is a noun.

Word	Noun	Adjective	Verb	Adverb
extort	No	No	Yes	No
pluck	Yes	No	Yes	No

As verbs, pluck is a hypernym of extort; that is, pluck is a word with a broader meaning than extort:

Other hypernyms of extort include fleece, gazump, hook, overcharge, plume, rob, soak, surcharge.

extort (noun)	pluck (noun)
	the act of pulling and releasing a taut cord
	the trait of showing courage and determination in spite of possible loss or injury

extort (verb)	pluck (verb)
get or cause to become in a difficult or laborious manner	pull or pull out sharply
obtain by coercion or intimidation	look for and gather
obtain through intimidation	pull lightly but sharply with a plucking motion
	strip of feathers
	rip off; ask an unreasonable price
	sell something to or obtain something from by energetic and especially underhanded activity