What are the differences between 'CompileError' and 'RuntimeError' in Solidity?

CompileError occurs during the compilation phase, where the Solidity compiler checks for syntax errors, type mismatches, and other issues that prevent the code from being compiled into bytecode. RuntimeError occurs during the execution phase when the smart contract is running on the blockchain. RuntimeError can be caused by various issues like access control violations, arithmetic errors, or incorrect data values. Compile errors prevent the contract from being deployed, while runtime errors can cause the contract to fail during execution. Addressing compile errors prevents deployment, while addressing runtime errors is crucial for ensuring the contract's functionality and security.