Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A constructed language, also shortened as conlang, is a language that has been deliberately created by a person or a group of people. A conlang differs from a natural language by its own grammar, phonology and vocabulary that are more or less inspired from the existent human languages. Created for international communication, linguistic experiments or as the result of new cultural approaches, the most famous constructed languages worldwide are Huttese, Klingon language, Sindarin, Slovio, Gelfling, Esperanto and others. Learn more about constructed languages by reading this book.