About Tajik Language
According to Wikipedia.org, Tajik is a form of Persian that is spoken in Tajikistan, Uzbekistan, Kyrgyzstan, Kyrgyzstan, China, and Kazakhstan. The total number of Tajik speakers is 8 million that including 6.3 million in Tajikistan itself. You will be surprised to know that the Persian language in Tajikistan was renamed Tajik by Stalin in 1932. This was done to differentiate Persian speakers in Iran and Central Asia. Before 1928 Tajik was written in Perso-Arabic script. However, from 1928 to 1940 it was modified with the Cyrillic alphabet. There were a lot of people who wanted to switch it to the Latin alphabet. The Tajik dialects are separated into northern, central, southern, and Southeastern dialects. Most of the politicians and other officials usually make their speeches in the Kulob dialect. There is a total of six vowels in this language.
About Azerbaijani Language
According to Wikipedia.org, Azerbaijani is the official and primary language of Azerbaijan. It is a form of Turkic language that is directly associated with modern Turkish. Even though it is the official language of Azerbaijan it is used in other countries that include South Russia (Dagestan) and Northern Iran. However, the dialects for both are different. It is not the official language in the north of Iran. Surprisingly, the number of Iranian Azerbaijan is huge in number. Even the Government of Iran has banned this language for many years now. According to the latest census, Azerbaijani is spoken by 92.5% population. English and Russian play an integral part in their education and communication. Lezgian, Talysh, Avar, Georgian, Budukh Juhuri, Khinalug, Udi, and Kryts are spoken by other minorities.