Isn't actually running your program and checking if it works a form of testing? The term "test suite" seems to refer to formal testing techniques like creating

Isn't actually running your program and checking if it works a form of testing? The term "test suite" seems to refer to formal testing techniques like creating unit tests and the like. I don't do that. But I do test my program on every functionality by running and checking if it does what it's supposed to do. Does that qualify as testing?