daybook vs vlog

daybook

noun
  • A daily chronicle; a diary. 

  • A logbook. 

  • An accounting journal. 

vlog

noun
  • A weblog using video as its primary presentation format. 

verb
  • To contribute to a video weblog. 

  • To post (something) to a video weblog. 

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