Vernacular (noun)

1. The everyday language spoken by people in a particular country or region.
2. A style of language or architecture that is characteristic of a particular country or region.

Origin:

From the latin word vernaculus, meaning native or domestic.

Examples:

1. The novel was written in the vernacular of the author's home country.
2. The children were taught to read and write in the vernacular of their community.
3. The vernacular architecture of the region was heavily influenced by traditional building techniques.
4. The vernacular of the internet has its own unique slang and jargon.
5. The poet's vernacular was rich and colorful, capturing the essence of the culture.