purification vs state of grace

purification

noun
  • A religious act or rite in which a defiled person is made clean or free from sin. 

  • The act or process of purifying; the removal of impurities. 

  • The pouring of wine into the chalice to rinse it after communion, the wine being then drunk by the priest. 

state of grace

noun
  • A condition free from mortal sin, in which one has the favor of God and enjoys unmerited divine assistance. 

How often have the words purification and state of grace occurred in a corpus of books? (source: Google Ngram Viewer )