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.
Tunisian Arabic
Many Tunisian and Maghrebi words, like "qarnīṭ ("octopus")", have a Latin etymology. The dialects were later called Pre-Hilalian Arabic dialects and were used along Classical Arabic for communication in Tunisia. Also, Siculo-Arabic was spoken in several islands near Tunisia like Sicily, Pantelleria, and Malta and entered into contact with the Tunisian pre-hilalian dialects. Consequently, it ameliorated the divergence in grammar and structures of all the concerned dialects from Classical Arabic.