blog vs critical analysis

blog

noun
  • 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.) 

  • An individual post to a blog. 

verb
  • To contribute to a blog. 

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

critical analysis

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