selection vs miscellany

selection and miscellany both are nouns.

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

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

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

selection (noun)	miscellany (noun)
the act of choosing or selecting	an anthology of short literary pieces and poems and ballads etc.
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