selection vs salmagundi

selection and salmagundi both are nouns.

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

As nouns, salmagundi is a hypernym of selection; that is, salmagundi is a word with a broader meaning than selection:

Other hypernyms of selection include assortment, miscellanea, miscellany, mixed bag, mixture, motley, potpourri, smorgasbord, variety.

selection (noun)	salmagundi (noun)
the act of choosing or selecting	cooked meats and eggs and vegetables usually arranged in rows around the plate and dressed with a salad dressing
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