overspread vs uncover

overspread

verb
  • To spread over or across (something); cover over; be scattered over; permeate, overrun. 

  • To be spread or scattered about. 

uncover

verb
  • To remove one's hat or cap as a mark of respect. 

  • To reveal the identity of. 

  • To expose the genitalia. 

  • To remove a cover from. 

  • To show openly; to disclose; to reveal. 

  • To expose (lines of formation of troops) successively by the wheeling to right or left of the lines in front. 

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