1. assortment
2. mixture, mixed bag, miscellany, miscellanea, salmagundi, smorgasbord, potpourri, motley, collection, aggregation, accumulation, assemblage, diverseness
3. diversity, multifariousness, heterogeneity, heterogeneousness, taxonomic group
4. taxonomic category, taxon, variety show
5. show, kind
6. sort, form, category, change
6. difference