You call the tests you write tests. I'm not even sure how this is a question. Manual tests and automated tests are terms used in industry, but mostly to distinguish manual versus automated end-to-end or integration tests. And then the only time you'd use the terms is when you have both and feel a need to distinguish them. Otherwise, just call them tests.
My main challenge is that I don't know what to call the tests I write, or the process that I use. Calling them "tests" can be confused with manual testing. I usually call them "automated tests" but it's a mouthful and not a term I hear from other people.