Pidgins that are spoken as first languages become creoles. Unlike pidgins, creoles have fully developed vocabulary and patterned grammar. Tok Pisin, like many pidgins and creoles, has a simpler phonology than the superstrate language. Creoles are thought to develop from pidgins as they become nativized. The term is principally used to describe pidgins, creoles, and mixed languages. The most common products are pidgins, creoles, code-switching, and mixed languages. A mixed language differs from pidgins, creoles and code-switching in very fundamental ways. Finally, the outside layer includes pidgins, creoles and L2 Englishes. Mixed languages, pidgins and creole languages constitute special genetic types of languages. Pidgins are less elaborated than non-Pidgin languages. Japanese Pidgin English is any of several English-based pidgins spoken or influenced by the Japanese. In time, many of these pidgins were nativized, becoming new stable creole languages. Pidgins are significantly simplified languages with only rudimentary grammar and a restricted vocabulary. Portuguese pidgins still exist in Angola and Mozambique. Pidgins can become full languages in only a single generation.