I fully agree with you that it's important to communicate in a language that's understandable for newbies, but that's a different conversation 😃.
Not only for newbies. This is not a conversation about dialing down on expert language so the laymen would understand. This is about semantics of words and basic set theory (something is a node in a set). Talking in a language that newbies understand is not even it. We once had a substitute teacher on math and she used the word "or", but she meant "and". Even though she would speak more expert language than us, she was simply wrong, she did not understand the meaning of the word.