potpourri vs opus

potpourri and opus both are nouns.

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

As nouns, opus is a hypernym of potpourri; that is, opus is a word with a broader meaning than potpourri:

potpourri: a musical composition consisting of a series of songs or other musical pieces from various sources
opus: a musical work that has been created

Other hypernyms of potpourri include composition, musical composition, piece, piece of music.

potpourri (noun)	opus (noun)
a jar of mixed flower petals and spices used as perfume	a musical work that has been created
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