Specialized slang is a type of language that is used by a particular group or profession. It includes words and phrases that are not typically used in everyday conversation. ARGOT, which has five letters, is a type of specialized slang that is used by criminals and other people who want to keep their conversations private. LINGO, also with five letters, is another type of specialized slang that is used by a specific group or profession. ARGO, with four letters, is a type of specialized slang that is used by sailors and fishermen.