What is the difference between Poliglot and Linguist?
They are both know more than 5 languages, can speak synchronously.
If a person lives in country where people speack at least in 3 languages and some dialects, and he or she can speak fluently, but cannot maybe explain why and how all organised in these languages..can we say that these languages are his native languages? And who is he? A poliglot or linguist?Does it mean that Poliglot has to know languages 99,9%?

Question

What is the difference between Poliglot and Linguist?
They are both know more than 5 languages, can speak synchronously. 
If a person lives in country where people speack at least in 3 languages and some dialects, and he or she can speak fluently, but cannot maybe explain why and how  all organised in these languages..can we say that these languages are his native languages? And who is he? A poliglot or linguist?Does it mean that Poliglot has to know languages 99,9%?

Answer

Polyglot derives from the Greek term polyglōttos which, roughly translated, means ‘many-tongued’  is someone who speaks a lot of languages fluently. There is no official number of languages you have to know to be a polyglot , but it’s usually at least four or five languages.

A linguist, on the other hand, is someone who studies languages. There are different fields of linguistics, such as phonetics, phonology, morphology, typology, semantics, pragmatics, and syntax. The point of linguistics is to study human languages, not learn as many languages as humanly possible.
So if you ever meet a linguist, don’t immediately ask them how many languages they speak because it's like asking a biologist how many pets that they have.

Answer

A poliglot is someone who can speak many languages. A linguist usually refers to someone who studies languages.

Answer

Thank you, Tano! I am interested. )))

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Hi Sarah! If you are interested into a brief intro on linguistics, there is one quite enjoyable at: https://www.alphadictionary.com/articles/index.html#minicourse