What is the difference between SGOV and Bil?

Can you elaborate on the differences between SGOV and Bil, especially in the context of cryptocurrency and finance? I'm curious to understand how these two entities or products differ in their functionalities, use cases, and perhaps even their risk profiles for investors. Are they both cryptocurrencies or do they belong to different categories within the broader financial ecosystem? Additionally, what are the key factors that investors should consider when deciding between investing in SGOV and Bil?