| English | eng-000 |
| vernacular language | |
| ISO 12620 | art-317 | vernacular_language |
| Middle Cornish | cnx-000 | yeth teythyek |
| Kernowek | cor-000 | yeth teythyek |
| རྫོང་ཁ་ | dzo-000 | ཕལ་སྐད |
| eesti | ekk-000 | argoo |
| eesti | ekk-000 | kohalik murrak |
| English | eng-000 | colloquial language |
| English | eng-000 | vernacularism |
| Old Cornish | oco-000 | yeth teythyek |
| فارسی | pes-000 | زبان بومی |
| فارسی | pes-000 | زبان مادری |