Onomastics (or, in older texts, onomatology) is the study of the etymology, history, and use of proper names.[1] An orthonym is the proper name of the object in question, the object of onomastic study.
Onomastics can be helpful in data mining, with applications such as named-entity recognition, or recognition of the origin of names.[2][3] It is a popular approach in historical research, where it can be used to identify ethnic minorities within wider populations[4][5] and for the purpose of prosopography.
Onomastics originates from the Greek onomastikós (ὀνομαστικός, 'of or belonging to naming'),[6][7] itself derived from ónoma (ὄνομα, 'name').[8]