observatory vs overlook

observatory

noun
  • A lookout (vantage point with a view of the surrounding area) 

  • A place where stars, planets and other celestial bodies are observed, usually through a telescope; also place for observing meteorological or other natural phenomena. 

overlook

noun
  • A vista or point that gives a beautiful view. 

verb
  • To offer a view (of something) from a higher position. 

  • To fail to notice; to look over and beyond (anything) without seeing it. 

  • To pretend not to have noticed (something, especially a mistake or flaw); to pass over (something) without censure or punishment. 

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