An odd collection is a group of items that are not usually found together. The term 'OLIO' is used to describe such a collection, and it is derived from the Spanish word for 'MIXTURE'. An OLIO is typically composed of a variety of different objects, often with no apparent connection between them. It can be used to refer to a collection of miscellaneous items, or to a variety of different styles or genres of music, art, or literature.