The article explores the differences between code coverage and test coverage, both of which are methodologies used to assess the efficacy of software testing. Code coverage focuses on the percentage of code executed during testing, typically involving developers and unit tests to ensure thorough execution of code statements, branches, and functions. Conversely, test coverage evaluates the extent to which functional requirements are tested, often through various testing mechanisms like unit, functional, integration, and acceptance testing. While code coverage is a white-box testing method that can be quantified, test coverage is a black-box approach that focuses on feature testing based on requirement specifications and is less quantifiable. Both methodologies have their advantages and disadvantages, and the choice between them depends on the project's complexity and requirements. The article emphasizes the importance of maintaining high coverage levels to ensure code quality and reduce the likelihood of undetected bugs, while also cautioning against assuming that high coverage equates to bug-free code.