Saudi Arabia
The official language of Saudi Arabia is Arabic. The three main regional variants spoken by Saudis are Hejazi Arabic (about 6 million speakers), Najdi Arabic (about 8 million speakers), and Gulf Arabic (about 0.2 million speakers). Saudi Sign Language is the principal language of the deaf community. The large expatriate communities also speak their own languages, the most numerous of which are Tagalog (700,000), Rohingya (400,000), Urdu (380,000), Egyptian Arabic (300,000), and Indonesian (250,000).
Tunisian Arabic
Tunisian Arabic is a variety of Arabic and as such shares many features with other modern varieties, especially the Maghrebi varieties of Arabic. Some of its distinctive features (compared to other Arabic dialects) are listed here.The Arabic dialects of Tunisia belong to either pre-Hilalian or Hilalian dialectal families.