commentary vs record book

commentary

noun
  • A brief account of transactions or events written hastily, as if for a memorandum. 

  • A series of comments or annotations; especially, a book of explanations or expositions on the whole or a part of some other work. 

  • An oral relation of an event, especially broadcast by television or radio, as it occurs. 

record book

noun
  • a book in which a record is kept of events, perhaps similar to a logbook. 

  • a book which lists achievements which break records, the most famous being "Guinness World Records", formerly known as "Guinness Book of Records". 

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