backsheesh vs pourboire

backsheesh and pourboire both are nouns.

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

As nouns, backsheesh and pourboire are synonyms defined as:

backsheesh and pourboire: a relatively small amount of money given for services rendered (as by a waiter)

Other synonyms of backsheesh include baksheesh, bakshis, bakshish, gratuity, tip.

backsheesh (noun)	pourboire (noun)
a relatively small amount of money given for services rendered (as by a waiter)	a relatively small amount of money given for services rendered (as by a waiter)