Creole
stable natural languages that have developed from a pidgin
Creole languages are languages which arise from a merging of other languages. They develop from pidgins, simplified mixtures of languages that appear when groups speaking different languages come into sustained contact. If a pidgin becomes more stable and children begin learning it as their primary language, it becomes a creole, a bona fide new language. Most Creoles are based on one European language and have admixture of several non-European ones. Mutual intelligibility can range from impossible to challenging but doable for native speakers. Code-switching (i.e. switching between different forms of language) is common, especially if both the Creole and the Metropole version of the language are official locally. Educated locals are generally also able to speak the Metropole version of the respective languages.