The definition applies the adjective to people, not professions. Maybe it’s not that a profession is noble, but rather some people in the profession perform their work with nobility? Perhaps a noble profession is one that provides more opportunities for the people who work in it to be noble.
Teaching has been considered a noble profession by people for various reasons, with one of the most common being that teachers help to educate future generations. More generally, some have described teachers as "agents of the future," because they help people acquire the skills necessary to take on new challenges and contribute to the world in meaningful ways.
One of my best friends from high school, Alex, is an architect. Years ago when we were both still in high school or maybe when we’d moved on to college, Alex told me one of the reasons he was drawn to architecture is that it’s a noble profession.
I agreed with the statement, but later wondered what it really meant. What makes a profession noble? It’s a question I’ve thought about on and off over the years and today I want to think aloud about web design and whether or not it too is a noble profession.
In this way, teachers have a very important responsibility to develop student's hunger to acquire knowledge and seek understanding with others who think differently from them, an apparatus for peace in society. The idea that teaching is a noble profession is commonly used and sometimes referenced in conjunction with arguments that defend teacher salaries, unions and employment benefits. These arguments assert that since teaching is such an important and noble profession, teachers shouldn't be shunned or neglected by the society to which they serve an important interest.