look over vs size up

look over

verb
  • To give a brief visual inspection. 

  • To scan-read and check for errors. 

size up

verb
  • To evaluate; to estimate or anticipate the magnitude, difficulty, or strength of something. 

  • To wear a larger size of clothing. 

How often have the words look over and size up occurred in a corpus of books? (source: Google Ngram Viewer )