The priesthood itself is the same for diocesan and religious priests, but the way they live it out is different. A diocesan priest serves his vocation among his brother priests (presbyterate) and within the parishes where he is assigned. A religious priest, on the other hand, is ordained to provide the sacraments for his community of brothers (and sometimes sisters). While it’s not the norm, religious priests are sometimes sent with their community to administer a diocesan parish to assist the local Church.