Functional testing and non-functional testing are two types of software testing that are used to ensure that a software application works as intended and meets the expectations of the users.

Functional Testing:
Functional testing is a type of software testing where the software application is tested against its functional requirements. The main purpose of functional testing is to ensure that the software application works as intended and meets the business requirements.

Non-functional Testing:
Non-functional testing is a type of software testing where the software application is tested against its non-functional requirements. Non-functional requirements are the requirements that are not directly related to the functionality of the software application. These requirements include aspects such as performance, usability, security, reliability, compatibility, and scalability.

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