COLORFUL LANGUAGE is a term used to describe language that is creative, expressive, and often humorous. An example of this type of language is an OATH, which is a solemn promise or statement of intent. SLANGUAGE is a type of informal language that is often used in casual conversation. Finally, four-letter words are a type of profanity that are used to express strong emotions. All of these types of language can be considered colorful language.