Terminology
The word pidgin, formerly also spelled pigion, originally used to describe Chinese Pidgin English, was later generalized to refer to any pidgin. Pidgin may also be used as the specific name for local pidgins or creoles, in places where they are spoken. For example, the name of the creole language Tok Pisin derives from the English words talk pidgin. Its speakers usually refer to it simply as "pidgin" when speaking English. Likewise, Hawaiian Creole English is commonly referred to by its speakers as "Pidgin".
The term jargon has also been used to describe pidgins, and is found in the names of some pidgins, such as Chinook Jargon. In this context, linguists today use jargon to denote a particularly rudimentary type of pidgin; however, this usage is rather rare, and the term jargon most often refers to the words particular to a given profession.
Pidgins may start out as or become trade languages, such as Tok Pisin. Trade languages are often full blown languages in their own right such as Swahili. Trade languages tend to be "vehicular languages", while pidgins can evolve into the vernacular.
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