I've been teaching for 27 years. So, when someone asks me what I do, I necessarily talk about teaching. During the conversation that ensues, the person with whom I am speaking often comments: "I would love to teach, but I don't want to do all the grading."
Let's break this statement down a bit.
"Grading" refers to a letter grade, numerical score, or simply a pass/fail based on the assessment of student work on an "assignment." That assignment might written, spoken, or in another format. Regardless, the assignment calls on students to apply what they've learned in the course. Reviewing this student work provides the instructor feedback on student progress. More broadly, the instructor gains insight about the effectiveness of their teaching. Assessing the work--"grading" it-- gives the student feedback on how well they're doing in the class. Ideally, it also offers recommendations for improvement--that is, to help students learn and grow.
"Grading" serves the needs of both the instructor and student. Without it, it's impossible to determine if actual learning takes place.
In short, to proclaim "I would love to teach, but I don't want to do all the grading" is absurd. They necessarily go together.