pourboire vs backsheesh

pourboire and backsheesh both are nouns.

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

As nouns, pourboire and backsheesh are synonyms defined as:

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

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

pourboire (noun)	backsheesh (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)