It is true to say that constructed languages can be false or unrealistic, and used for different purposes.
It is a language that was not built historically and naturally, but a language that was invented by someone and planned, and can be used for fictitious purposes, for example.
Therefore, a constructed language can also be called a fictional and auxiliary language, as they are consciously created languages, such as Esperanto for example, a language created by the Polish doctor Ludovic Zamenhof.
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