"Flag of Earth" is a powerful phrase that represents the unity of the entire planet. However, there are several other words and phrases that can be used as synonyms to convey the same meaning. For instance, "World Flag," "Global Banner," and "Earth Emblem" are a few possible alternatives. These expressions highlight the idea of collective identity, which is essential in a world where differences often lead to division. Other potential synonyms could include the "Flag of the Planet," "Flag of Humanity," or the "Universal Standard." Regardless of the terminology used, the message remains the same: we are all inhabitants of the same planet and should work together towards a better future.