The term 'Family Insignia' refers to symbols that are used to represent a family or group. These symbols can take the form of a CREST, which is a five-letter word, or a coat of arms, which is a ten-letter word. Crests and coats of arms are often used to identify a family or group, and they can be used to show loyalty, honor, and pride. They are also used to signify a family's history and heritage.