humdinger vs innovation

humdinger

noun
  • Something that is particularly outstanding, unusual, or exceptional. 

innovation

noun
  • Something new, and contrary to established customs, manners, or rites. 

  • A change effected by innovating; a change in customs 

  • A newly formed shoot, or the annually produced addition to the stems of many mosses. 

  • The act of innovating; the introduction of something new, in customs, rites, etc. 

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