aggregation, collection, accumulation, assemblage - several things grouped together or considered as a whole

grab bag - an assortment of miscellaneous items

witch's brew, witches' brew, witches' broth - a fearsome mixture; "a witches' brew of gansters and terrorists"; "mixing dope and alcohol creates a witches' brew"

range - a variety of different things or activities; "he answered a range of questions"; "he was impressed by the range and diversity of the collection"

selection - an assortment of things from which a choice can be made; "the store carried a large selection of shoes"

farrago, hodgepodge, hotchpotch, melange, mingle-mangle, mishmash, oddments, odds and ends, omnium-gatherum, ragbag - a motley assortment of things

alphabet soup - a confusing assortment; "Roosevelt created an alphabet soup of federal agencies"

sampler - an assortment of various samples; "a candy sampler"; "a sampler of French poets"

anthology - a collection of selected literary passages