potpourri vs selection

potpourri and selection both are nouns.

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

As nouns, selection is a hyponym of potpourri; that is, selection is a word with a more specific, narrower meaning than potpourri:

potpourri (noun)	selection (noun)
a jar of mixed flower petals and spices used as perfume	the act of choosing or selecting
a musical composition consisting of a series of songs or other musical pieces from various sources	the person or thing chosen or selected
a collection containing a variety of sorts of things	a passage selected from a larger work
	an assortment of things from which a choice can be made
	a natural process resulting in the evolution of organisms best adapted to the environment