end to end testing vs unit testing

1End to end testing is the process of testing
2a piece of software from start to finish as
3it will be used by the actual users. 
4For example a web application, you would start a browser,
5navigate to the correct URL, use the application
6as intended, and verify the behavior.
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9UNIT TESTING is a  software testing where individual
10units or components of a software are tested.
11The purpose is to validate that each unit of the 
12software performs as designed.