Level of assurance: A measure of the confidence that a system or process provides the desired level of security. It is used in security assessments and audits to determine the adequacy of security controls. Examples include low, medium, and high levels of assurance.

Level of concern: A measure of the potential impact of a security threat or vulnerability, used in risk assessments to prioritize addressing the threat or vulnerability. Common categories include low, medium, and high levels of concern.

Level of protection: A measure of the effectiveness of security controls in safeguarding a system or process from threats and vulnerabilities. Used in security assessments and audits, it determines the adequacy of controls, incorporating aspects such as confidentiality, integrity, and availability.

Libraries (software): A collection of reusable software components that can be used to build or extend applications. It is used to improve the efficiency and maintainability of software development. Examples of software libraries include the Java API, the .NET Framework, and the Standard Template Library.

Licensing agreement: A contract between a software vendor and a user that specifies the terms and conditions for using the software. It is used to protect the intellectual property rights of the software vendor and ensure that the user complies with the specified terms and conditions. Examples include open-source and proprietary licensing agreements.

Life cycle: The stages a system or process goes through from its inception to disposal. It is used in system development and management to ensure that security is considered and implemented throughout the entire life cycle. Examples include planning, design, development, implementation, operation, and disposal.