feel out vs inspect

feel out

verb
  • To try to ascertain a person's point of view, or the nature of a situation, by cautious and subtle means. 

inspect

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

  • To view and examine officially. 

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