inspection vs onlook

inspection

noun
  • The act of examining something, often closely. 

  • An organization that checks that certain laws or rules are obeyed. 

onlook

noun
  • The act of looking on (something); observation. 

  • One's perspective or outlook. 

  • That which is looked at, regarded, or considered. 

verb
  • To look on or look at; watch; observe; view; regard. 

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