There exists a significant difference between the functional test and the acceptance test. Functional testing refers to the verification activity. It checks whether a product has been designed in the right manner for optimal functionality or not. It also tests whether that software can meet the intended business requirements. Functional testing focuses on verifying whether the product functions in the desired manner. On the other hand, acceptance testing is the validation activity. It checks whether the right thing has been built or not. Acceptance testing evaluates whether the product is able to solve the problems of the customers or not.