Question

Differentiate between mother tongue and other language.

Answer 1

actually when you learn any language you can speak this very frequently and you feel very easy that language but your easiest language is your mother language because you learn this from you childhood and you never forget this.

you can learn any language but when you are in trouble you always speak you mother language .
As when you are sleeping anyone come and disturbing you then you being irritated that time and on that time you use your mother language.

hope it helps you

Answer 2

In some countries, the term native language or mother tongue refers to the language of one's ethnic group rather than one's first language. Children brought up speaking more than one language can have more than one native language, and be bilingual or multilingual