comic book vs memo

comic book

noun
  • A book or magazine that uses sequences of drawings to tell a story or series of stories, primarily in serialized form, usually fiction. 

memo

noun
  • A short note; a memorandum. 

  • A record of partial results that can be reused later without recomputation. 

verb
  • To record something; to make a note of something. 

  • To send someone a note about something, for the record. 

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