Hejaz
Historically, the Hejaz has always seen itself as separate from the rest of Saudi Arabia. The Hejaz is the most populated region in Saudi Arabia; 35% of all Saudis live there. Hejazi Arabic is the most widely spoken dialect in the region. Saudi Hejazis are of ethnically diverse origins.
Varieties of Arabic
The most obvious phonetic difference between the two groups is the pronunciation of the letter ق "qaf", which is pronounced as a voiced in the Urban varieties of the Arabian Peninsula (like the Hejazi dialect in the ancient urban cities of Mecca and Medina) as well as in the Bedouin dialects across all Arabic-Speaking Countries, but is voiceless mainly in the post-Arabized Urban centers as either (with being an allophone in few words mostly in North African cities) or (merging with ) in the urban centers of Egypt and the Levant, all of which were mostly Arabized after the Islamic Conquests.