potpourri vs pastiche

potpourri and pastiche both are nouns.

Word	Noun	Adjective	Verb	Adverb
potpourri	Yes	No	No	No
pastiche	Yes	No	No	No

As nouns, potpourri and pastiche are synonyms defined as:

potpourri and pastiche: a musical composition consisting of a series of songs or other musical pieces from various sources

Other synonyms of potpourri include medley.

potpourri (noun)	pastiche (noun)
a jar of mixed flower petals and spices used as perfume	a work of art that imitates the style of some previous work
a musical composition consisting of a series of songs or other musical pieces from various sources	a musical composition consisting of a series of songs or other musical pieces from various sources
a collection containing a variety of sorts of things