hypocoristic vs moniker

hypocoristic

noun
  • A nickname, especially one indicating intimacy and formed through a shortening of the original name. 

adj
  • Relating to a nickname, usually indicating intimacy with the person. 

  • Relating to baby talk. 

moniker

noun
  • A personal name or nickname; an informal label, often drawing attention to a particular attribute. 

  • A person's signature. 

  • An object (structured item of data) used to associate the name of an object with its location. 

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