Question: what are the different language types?
Answer: Argot. An argot is a language primarily developed to disguise conversation, originally because of a criminal enterprise, though the term is also used loosely to refer to informal jargon.
Cant. ... 
Colloquial Language. ... 
Creole. ... 
Dialect. ... 
Jargon. ... 
Lingo. ... 
Lingua Franca.