choronym

choro- +‎ -nym

choronym (plural choronyms)

1. A regional toponym/placename.
   • 2018, Oleg Rustemov, Crimean Toponyms in the Court Registers of the 17th–18th Centuries and the the Issue of the Crimean Tatars' Tribal Composition:
     there are toponyms such as Salğır – the name of a river – and Qanglı (probably the name of the village, but it may be an oronym, or even a choronym).
2. A name associated with a medieval clan derived from regional placename.
   • 2012, Victor Cunrui Xiong, Emperor Yang of the Sui Dynasty: His Life, Times, and Legacy:
     Although sharing the same choronym with Pei Yen, Pei Ju belonged to a different branch of the same lineage, and its bloc identity was with Shandong.

• ethnonym