sampler vs potpourri

sampler and potpourri both are nouns.

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

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

sampler (noun)	potpourri (noun)
a piece of embroidery demonstrating skill with various stitches	a jar of mixed flower petals and spices used as perfume
an observation station that is set up to make sample observations of something	a musical composition consisting of a series of songs or other musical pieces from various sources
an assortment of various samples	a collection containing a variety of sorts of things
someone who samples food or drink for its quality