Abstract: Axion clouds are thought to form spontaneously around rotating black holes due to superradiance. Research is underway to find the existence of Axion by capturing traces of these clouds. Here, we discuss the influence of self-interactions and tidal interactions on the evolution of axion clouds. Furthermore, boson stars are often discussed as alternative compact objects to black holes, but its formation process is less clear. We will discuss what scenarios are possible for compact boson star formation.