christening vs dedication

christening

noun
  • Any instance of someone's or something's being christened. 

  • The Christian sacrament at which someone, usually a child, is baptized and given a Christian name. 

dedication

noun
  • A ceremony marking an official completion or opening. 

  • The deliberate or negligent surrender of all rights to property. 

  • A note addressed to a patron or friend, prefixed to a work of art as a token of respect, esteem, or affection. 

  • The act of dedicating or the state of being dedicated. 

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