The term "world souls" refers to the belief that all living entities have a soul that is interconnected with each other and with the world around them. In other words, it describes the idea of a collective consciousness that exists within the universe. While there are a few synonyms that come close to capturing the essence of this concept, none of them encapsulate it fully. Some possible synonyms for "world souls" include universal consciousness, cosmic mind, collective soul, and global spirit. Each of these phrases suggests a broader, all-encompassing perspective on the interconnectedness of life that is at the core of the notion of world souls.