This is the 6889th most frequent German word.
ferenc
"Ferenc" is not a German word; it is a Hungarian male given name equivalent to "Francis" in English.
In this sentence, 'Ferenc' is used as a proper noun, referring to a specific name.
Ferenc ist ein ungarischer Name.
Ferenc is a Hungarian name.
Here, 'Ferenc' is the subject of the sentence performing the action of writing.
Ferenc schrieb gestern einen Brief.
Ferenc wrote a letter yesterday.
In this sentence, 'Ferenc' is used in a possessive context to describe ownership of the book.