potpourri vs aggregation

potpourri and aggregation both are nouns.

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

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

Other hypernyms of potpourri include accumulation, assemblage, collection.

potpourri (noun)	aggregation (noun)
a jar of mixed flower petals and spices used as perfume	the act of gathering something together
a musical composition consisting of a series of songs or other musical pieces from various sources	several things grouped together or considered as a whole
a collection containing a variety of sorts of things