In Norse mythology, the name of the symbol representing the bond between gods and humans is Yggdrasil, the World Tree. This immense and central ash tree connects various realms and symbolizes life, knowledge, and the interconnectedness of all beings. It serves as a profound representation of the unity between divine and mortal realms, illustrating the Norse beliefs surrounding fate, existence, and the cyclical nature of life. Yggdrasil is a key symbol in understanding the cosmology within Norse mythological narratives.