The word "解决" is formed by combining the characters "解" and "决". "解" originally depicts using a knife to separate ox horns, conveying the sense of untying, dividing, or analyzing. "决" originally depicts water breaking through a barrier, conveying the sense of deciding, settling, or resolving. Together, they form a compound where "解" contributes the idea of analyzing or loosening a problem, and "决" contributes the idea of decisively settling it, resulting in the meaning to solve or resolve.