What term refers to language used in casual conversation?

The term that refers to language used in casual conversation is colloquial language. This type of language is characterized by its informal tone and is often used in everyday speech rather than in written or formal contexts. Colloquial expressions are regionally specific and may include slang or idiomatic phrases that are easily understood by those familiar with the local culture.

In contrast, formal language adheres to stricter grammar rules and is more structured, making it suitable for academic or professional environments. Abstract language is focused on concepts and ideas rather than specific images or tangible objects, while technical language contains specialized terminology pertinent to specific fields or disciplines. Thus, colloquial language is the best fit for describing the relaxed and informal nature of everyday conversation.