Tunisian Arabic (locally: [tuːnsi] or derja) is a Maghrebi dialect of the Arabic language, spoken by some 11 million people. It is usually known by its own speakers as Derja, which means dialect, to distinguish it from Standard Arabic, or as Tunsi, which means Tunisian. It is spoken all over Tunisia, and merges, as part of a dialect continuum, into similar varieties in eastern Algeria and western Libya. Its morphology, syntax, pronunciation and vocabulary are quite different from Standard or Classical Arabic. Tunisian Arabic, like other Maghrebi dialects, has a vocabulary mostly Arabic, with significant Berber substrates, and many words and loanwords borrowed from Berber, French, Turkish, Italian and Spanish. Derja is mutually spoken and understood in the Maghreb countries, especially Morocco, Algeria and Tunisia, but hard to understand for middle eastern Arabic speakers. It continues to evolve by integrating new French or English words, notably in technical fields, or by replacing old French and Spanish ones with Standard Arabic words within some circles. In Eastern Arab countries the similar term (العامية (al-)`āmmiyya) is more commonly used for the colloquial varieties of Arabic there. Moreover, Tunisian is also closely related to Maltese, which is not considered to be a dialect of Arabic for sociolinguistic reasons^{[citation needed]}.