For this public penance the Greek words are μετάνοια and ἐξομολόγησις; the Latin, penitentia and frequently exomologesis. As the word penitentia includes not merely sorrow for sin and change of heart, but also penance, or the penalty inflicted by authority, and is used in such phrases as penitentiam agere or facere, it has been necessary in the translation of the De Penitentia to vary the English terms, and to use sometimes repentance, sometimes penance.