Variable rename is a programming technique that involves changing the name of a variable in code. This is often done to improve code readability, maintainability, or to avoid naming conflicts. By giving a variable a more descriptive name, developers can make their code easier to understand for themselves and others. In many programming environments, tools are available to assist with variable renaming. These tools can automatically update all instances of the variable throughout the codebase, ensuring consistency and reducing the risk of errors. This process is particularly useful in large projects where variables may be used in multiple locations.