Shinto, which means "Way of the Gods," is the traditional religion of Japan that focuses on nature. Many consider Shinto to be a form of Animism due to the many similarities found between them. Shinto teaches that there is a sacredness of the whole universe and that humans can be in tune with this sacredness. Every mountain, river, plant, animal, and all the diverse phenomena of heaven and earth have spirits, or kami, which inhabit them. Reverence is paid to the ancestors through the practice of ancestor worship.