onomasiology
onomastics
http://id.loc.gov/authorities/subjects/sh85094813
https://en.wikipedia.org/wiki/Category:Onomastics
https://en.wikipedia.org/wiki/Onomastics
https://www.wikidata.org/wiki/Q175156
P321.8-P323.5
The study of the etymology, history, and use of proper names.
onomatology