Are Saudis and Iraqis the same race?

Saudi Arabia has about 30.89 million people, most of whom are Arabs who believe in Islam; Iraq has a population of 36 million, mainly Arabs and Kurds.

You know, Kurds are one of the oldest ethnic groups in West Asia and the fourth largest ethnic group in the Middle East after Arabs, Turks and Persians, with a total population of about 30 million. The Kurdish settlement is called Kurdistan. Most of this area was originally ruled by the Ottoman Empire. Kurds believe in Islam, mostly Sunnis, and speak Kurdish. Kurdish script uses Arabic letters in Iraq and Iran, and Latin letters in Turkey and Syria.