Fürst ( ; from Old High German furisto, "first", a translation of the Latin princeps; plural: Fürsten) is a German title of nobility, usually translated into English as prince.
The term refers to the head of a principality or the head of a high-ranking noble family. It is distinguished from the son of a monarch, who is referred to as Prinz. English uses the term prince for both concepts. Latin-based (French, Italian, Romanian, Spanish, Portuguese) and Slavic-based (Russian, Polish, Serbian, etc.) languages also employ a single term, whereas Scandinavian languages use separate terms similar to those used in German.
Read more about Fürst: Use of The Title in German, Other Uses in German, Derived Titles, Origins and Cognates