A related group is a collective of people, animals, or things that are connected in some way. The term can be broken down into four distinct words: FAMILY (6 letters), CLAN (4 letters), KIN (3 letters), and CATEGORY (8 letters). A FAMILY is a group of people related by blood or marriage, while a CLAN is a larger group of people who share a common ancestor. KIN is a more general term used to refer to any relative, and a CATEGORY is a group of people or things that share certain characteristics.