mixed bag vs miscellany

mixed bag and miscellany both are nouns.

Word	Noun	Adjective	Verb	Adverb
mixed bag	Yes	No	No	No
miscellany	Yes	No	No	No

As nouns, mixed bag and miscellany are synonyms defined as:

mixed bag and miscellany: a collection containing a variety of sorts of things

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

mixed bag (noun)	miscellany (noun)
a collection containing a variety of sorts of things	an anthology of short literary pieces and poems and ballads etc.
	a collection containing a variety of sorts of things