What is WCRO and CRO?

Could you please explain what WCRO and CRO are, and how they relate to the world of cryptocurrency and finance? Are they both forms of digital currencies, or do they serve different purposes within the industry? If so, could you provide some specific examples of how they are used and the benefits they offer to investors and users? Additionally, are there any risks associated with investing in WCRO or CRO, and what precautions should be taken when considering these options?