pluck vs rob

pluck is a noun but rob is not a noun.

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

As verbs, pluck and rob are synonyms defined as:

Other synonyms of pluck include fleece, gazump, hook, overcharge, plume, soak, surcharge.

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

pluck (verb)	rob (verb)
pull or pull out sharply	take something away by force or without the consent of the owner
look for and gather	rip off; ask an unreasonable price
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