General terms:
* Vernacular literature: This is the most common and general term, referring to any literature written in the everyday language of the people, as opposed to a formal or literary language.
* Popular literature: This term emphasizes the widespread appeal of the literature, suggesting it is written for a broad audience and uses language that is accessible and engaging.
* Folk literature: This term typically refers to traditional stories, songs, and other forms of literature passed down orally within a community.
More specific terms:
* Dialect literature: This term highlights the use of specific regional or social dialects in the literature.
* Colloquial literature: This term emphasizes the use of informal language, slang, and idioms that are characteristic of everyday speech.
* Oral literature: This term focuses on literature that is primarily transmitted through oral means, such as storytelling, songs, and poems.
The best term to use will depend on the specific context and the type of literature you are discussing.