Arab... arab is the word you're looking for you fucking imbecile. You know nothing.
Muslims are by definition people that are adherents to that religion Islam.
C= Arab (or w/e ethnic group you want to nit pick about, like the Kurds)
All A's are B's and all B's are A's.
Some C's are A.
"A Muslim (Arabic: مسلم; /ˈmʊslɨm/ MOOS-lim or English pronunciation: /ˈmʌzlɨm/ MUZ-lim) or Moslem is an adherent of the religion of Islam. Literally, the word means "one who submits (to God)". Muslim is the participle of the same verb of which Islam is the infinitive."