Substitution of a title for a name WordNet 3.0 & Open English WordNet

In rhetoric, antonomasia is a kind of metonymy in which an epithet or phrase takes the place of a proper name, such as "the little corporal" for Napoleon I, or conversely the use of a proper name as an archetypal name, to express a generic idea. Wikipedia

A substitution of any epithet or phrase for a proper name Wikipedia Disambiguation

Forma estilica Wikidata

The substitution of an epithet or title in place of a proper noun. Wiktionary

Substitution of an epithet or title in place of a proper noun. Wiktionary (translation)