A first language (also native language, mother tongue, arterial language, or L1) is the language(s) a person has learned from birth or within the critical period, or that a person speaks the best and so is often the basis for sociolinguistic identity. In some countries, the terms native language or mother tongue refer to the language of one's ethnic group rather than one's first language. Sometimes, there can be more than one mother tongue, when the child's parents speak different languages. Those children are usually called bilingual.

By contrast, a second language is any language that one speaks other than one's first language.

Sometimes the term native language is used to indicate a language that a person is as proficient in as a native individual of that language's "base country", or as proficient as the average person who speaks no other language but that language.^{[citation needed]}

Sometimes the term mother tongue or mother language is used for the language that a person learnt as a child at home (usually from their parents). Children growing up in bilingual homes can, according to this definition, have more than one mother tongue or native language.

Asha Negi is an Indian television actor best known for playing the role of Purvi Deshmukh in Pavitra Rishta.

Asha Negi,started her acting with her Debut in Bade Acche Lagte Hain on Sony TV. Later, she was again offered a parallel lead in the successful show Pavitra Rishta.She has also won the tittle of Miss Uttarakhand in 2009. on Zee TV as Purvi,adopted daughter of Archana.Due to her popularity in the show and her pairing with Rithvik Dhanjani her character in the show became extremely popular that she even gave her special performance in the marriage ceremony of Punar Vivah along with her co-star.