Is مَحْمود the equivalent of Muhammad?
No, they are two different names (but they are driven from the same root word)
محمد Mohamed is And yes they both derived from the same three letters which mean “to praise”e
Why can't it be - is a Lebanese cos I just got wrong for using that
Duolingo is consistent in not using the word "a" in front of a nationality. It's being used as an adjective, not as a noun, so it doesn't get an article.