inspect vs read through

inspect

verb
  • To examine critically or carefully; especially, to search out problems or determine condition; to scrutinize. 

  • To view and examine officially. 

read through

verb
  • To thoroughly read something to check or proofread it 

  • To read and obey a signal that is beyond the applicable one (often mistakenly) 

  • To read a script out loud casually with other actors but without blocking 

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