The term 'Groups Related by Blood' can be summarized as CLANS, which is a five-letter word. CLANS are groups of people who share a common ancestor and are related by blood. CLANS are typically found in cultures that practice kinship and descent, such as those found in Scotland, Ireland, and other parts of Europe. CLANS often have a shared history, culture, and identity, and members of the same clan may have a strong sense of loyalty and solidarity.