Matching pair is a term used to describe two items that are identical or very similar. In this case, the crossword solutions for the term are 'twinset' (7 letters) and 'SET' (3 letters). Twinset is a type of clothing consisting of two pieces, usually a top and a cardigan, that are made from the same material and often have matching colors and patterns. A SET, on the other hand, is a group of items that are related in some way, such as a collection of dishes or a group of furniture.