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n.
a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection; "the Post Office issued a series commemorating famous American entertainers"; "his coin collection included the complete series of Indian-head pennies"
n.
a collection containing a variety of sorts of things; "a great assortment of cars was on display"; "he had a variety of disorders"; "a veritable smorgasbord of religions"