initials vs naming

initials

noun
  • An abbreviation of a person's name, constructed by taking the initial letters of first, last, and sometimes middle name(s). See monogram 

naming

noun
  • The process of giving names to things. 

  • A ritual or ceremony in which a person's name is given or announced. 

adj
  • Giving a name to a person or thing. 

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