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 largest differences between the classical/standard and the colloquial Arabic are the loss of grammatical case; a different and strict word order; the loss of the previous system of grammatical mood, along with the evolution of a new system; the loss of the inflected passive voice, except in a few relic varieties; restriction in the use of the dual number and (for most varieties) the loss of the feminine plural. Many Arabic dialects, Maghrebi Arabic in particular, also have significant vowel shifts and unusual consonant clusters. Unlike other dialect groups, in the Maghrebi Arabic group, first person singular verbs begin with a n- (ن).