glimpse vs overshadow

glimpse

verb
  • To appear by glimpses. 

  • To see or view briefly or incompletely. 

noun
  • A brief look, glance, or peek. 

  • A sudden flash. 

  • A faint idea; an inkling. 

overshadow

verb
  • To obscure something by casting a shadow. 

  • To dominate something and make it seem insignificant. 

  • To shelter or protect. 

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