examine vs look over

examine

verb
  • to observe or inspect carefully or critically 

  • to interrogate 

  • to determine the aptitude, skills or qualifications of someone by subjecting them to an examination 

  • to check the health or condition of something or someone 

look over

verb
  • To give a brief visual inspection. 

  • To scan-read and check for errors. 

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