offertory vs reward

offertory

noun
  • The part of the Eucharist service when offerings of bread and wine are placed on the altar and when any collection is taken; also, the money or other things collected. 

  • A linen or silken cloth anciently used in various ceremonies connected with the administration of the Eucharist. 

  • A prayer said or sung as an anthem while offerings of bread and wine are placed on the altar during the Roman Catholic Mass or the Anglican Communion service. 

reward

noun
  • A prize promised for a certain deed or catch 

  • Something of value given in return for an act. 

  • The result of an action, whether good or bad. 

verb
  • To give a reward to or for. 

  • To recompense. 

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