#vietnamese
- Austroasiatic — Pertaining to a large language family of Southeast Asia and eastern India, comprising discontinuously distributed idioms such as Khmer and Vietnamese; as a neuter noun, it denotes the linguistic phylum itself. It also describes ethno-cultural elements or native populations speaking these languages.
- Bac Bo — A geographical and historical name used to designate the northern region of Vietnam, historically known in the West as Tonkin. This area, centered on the fertile delta of the Red River, represents the cradle of Vietnamese civilization and includes the capital Hanoi; in a modern sense, the term is used in administration, geopolitics, and tourism to describe the northern Vietnamese provinces.