repress vs unblock

repress

noun
  • A record pressed again; a repressing. 

verb
  • To check; to keep back. 

  • To press again. 

  • To forcefully prevent an upheaval from developing further. 

unblock

noun
  • The removal of a block or blockage. 

verb
  • To remove or clear a block or obstruction from. 

  • In whist, to throw away a high card so as not to interrupt one's partner's long suit. 

  • To free or make available. 

  • To enable communication again, via telephone, instant messaging, etc., with (somebody previously blocked). 

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