The term BISON BUNCH OF is related to the American bison, a large mammal that is native to North America. A HERD of bison is a group of bison that live and travel together. The word HERDS (5 letters) is used to describe a large group of bison. The word HERD (4 letters) is used to describe a smaller group of bison. The word HUMP (4 letters) is used to describe the large muscle on the back of a bison. The word MANE (4 letters) is used to describe the long fur on the neck of a bison.