Well you can start making that distinction yourself by calling them Arabs, since Saudi is just an adjective meaning "pertaining to Saud." Arabia will be there

Well you can start making that distinction yourself by calling them Arabs, since Saudi is just an adjective meaning "pertaining to Saud." Arabia will be there forever, but since 1932 and until the house of Saud goes down the toilet like it deserves to, Arabia is temporarily a Saudi place.