blog vs sitrep

blog

noun
  • An individual post to a blog. 

  • A website that allows users to reflect, share opinions, and discuss various topics in the form of an online journal, sometimes letting readers comment on their posts. Most blogs are written in a slightly informal tone (personal journals, news, businesses, etc.) 

verb
  • To contribute to a blog. 

  • To blag, to steal something; to acquire something illegally. 

sitrep

noun
  • a situation report. 

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