 The title "gadol hador" is usually only given to one Jewish Sage at a time, while the title ""Rashkebahag"" can be given to a few, and the term "Gedolei Yisrael" collectively refers to all leading rabbis in the Haredi community.The term is generally applied to rabbinic leaders since World War I.Major rabbis from earlier generations are known as Rishonim or Achronim.