overlook vs signalize

overlook

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

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

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

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

signalize

verb
  • To indicate; to be a sign of. 

  • To furnish (a traffic intersection) with a traffic signal. 

  • To communicate with (someone) by means of a signal. 

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