perk vs backsheesh

perk and backsheesh both are nouns.

Word	Noun	Adjective	Verb	Adverb
perk	Yes	No	Yes	No
backsheesh	Yes	No	No	No

As nouns, backsheesh is a hyponym of perk; that is, backsheesh is a word with a more specific, narrower meaning than perk:

perk: an incidental benefit awarded for certain types of employment (especially if it is regarded as a right)
backsheesh: a relatively small amount of money given for services rendered (as by a waiter)

Other hyponyms of perk include apanage, appanage, baksheesh, bakshis, bakshish, gratuity, pourboire, tip.

perk (noun)	backsheesh (noun)
an incidental benefit awarded for certain types of employment (especially if it is regarded as a right)	a relatively small amount of money given for services rendered (as by a waiter)

perk (verb)	backsheesh (verb)
gain or regain energy