The primary difference between test planning and test strategy is their purpose and scope. While test planning is a document that outlines the specifics of the testing process for a particular project, test strategy provides an overarching approach to testing across multiple projects or for an entire organization.

A Code Review is a systematic examination of the application's source code. It's conducted to find vulnerabilities or bugs before the app is deployed. While tools like Selenium and JUnit focus on functional testing, and Wireshark on network analysis, only a thorough code review provides insights into code vulnerabilities.

Path testing is a white-box testing technique that ensures every path through the program is tested at least once. It is particularly focused on evaluating the program's internal logic paths to ensure all code branches and potential execution paths are tested.

The "risk matrix" is a tool that visualizes risks in a matrix format, based on their likelihood (or probability) on one axis and their impact on another. By categorizing risks in this manner, teams can easily prioritize which risks need immediate attention and which can be addressed later or monitored.

Configuration Management ensures consistency across various attributes of a product. One of these attributes is the 'physical' aspect, which relates to the tangible characteristics, components, and structure of the product. This is vital for ensuring the product meets the expected standards and requirements.

"Heuristic Evaluation" is a usability inspection method where expert evaluators individually review an interface based on a list of recognized usability principles, known as heuristics. These evaluators identify usability problems in the design, allowing designers to rectify these issues for an improved user experience.

Exploratory Testing involves testers exploring the software without pre-defined test cases or a specific plan. It's a dynamic process where testers learn the application and simultaneously design and execute tests to find defects.

Regression Testing is the process of testing changes to applications to make sure that the older programming still works with the new changes. It's crucial when there are frequent code changes to ensure that new code doesn't negatively impact existing functionality.

Equivalence Partitioning is a test design technique where input data is divided into different equivalence classes based on their behavior. Testing only one value from each class is deemed sufficient. For a vast range of input numbers, it reduces the number of tests while ensuring effective coverage.

Component Testing: Also known as module or unit testing, this focuses on testing specific functions or modules of an application independently to ensure their performance. It aims to identify any issues at the component level before integrating them into the larger system.