The word "ainu" means "human being" and is the name used by the Ainu to refer to themselves. In contrast, "kamuy" means "god". The Ainu think that all existence that has mind and plays a role in this world are "kamuy". Sparrows or standing trees are "kamuy". In the Ainu perspective of the world, all goes well and human being can also be happy if "ainu" and "kamuy" help each other.