"زَوْجي مَحْمود لُبْنانِيّ."

Translation: My husband Mahmoud is Lebanese.

[hectorlqr]

Is مَحْمود the equivalent of Muhammad?

[Hiba.X]

No, they are two different names (but they are driven from the same root word)

[deactivated user]

محمد Mohamed is
And yes they both derived from the same three letters which mean “to praise”e

[delzea]

Why can't it be - is a Lebanese cos I just got wrong for using that

[MichelleDa878143]

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.