Tamil is a Dravidian language, while Hindi, Bengali, and Marathi are Indo-Aryan languages.

Hindi is the most widely spoken Indo-Aryan language, with over 500 million speakers.

Urdu is the official language of Pakistan and is spoken by over 100 million people.

Bengali is the official language of Bangladesh and is spoken by over 200 million people.

Nepali is the official language of Nepal and is spoken by over 12 million people.

Sinhala is the official language of Sri Lanka and is spoken by over 16 million people.

Dhivehi is the official language of the Maldives and is spoken by over 300,000 people.

Dzongkha is the official language of Bhutan and is spoken by over 160,000 people.

Dari is one of the two official languages of Afghanistan and is spoken by over 12 million people.

Tajik is the official language of Tajikistan and is spoken by over 4 million people.

Uzbek is the official language of Uzbekistan and is spoken by over 25 million people.

Turkmen is the official language of Turkmenistan and is spoken by over 5 million people.

Kyrgyz is the official language of Kyrgyzstan and is spoken by over 4 million people.

Kazakh is the official language of Kazakhstan and is spoken by over 10 million people.

Russian is the official language of Russia and is spoken by over 140 million people.