Have always personally seen Gherkin being used with Cucumber, as I believe that they’re two parts of the same whole, but I’m happy to be corrected if wrong :).

My understanding is that Gherkin is the syntax used to write the scenarios / acceptance criteria, whilst Cucumber is the tool that interprets said scenarios and executes them as automated tests.

I can read text in any orientation, even if mirrored, as easily as if it was right side up / not mirrored. Not sure why, and almost completely useless, but was surprised to discover that supposedly not everyone can do this?