Semitic languages
The similarity of the Hebrew, Arabic and Aramaic languages was accepted by Jewish and Islamic scholars since medieval times. The languages were familiar to Western European scholars due to historical contact with neighbouring Near Eastern countries and through Biblical studies, and a comparative analysis of Hebrew, Arabic, and Aramaic was published in Latin in 1538 by Guillaume Postel. Almost two centuries later, Hiob Ludolf described the similarities between these three languages and the Ethiopian Semitic languages. However, neither scholar named this grouping as "Semitic".
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.