give off vs repress

give off

verb
  • To emit; to produce and send forth; to come across in some manner. 

repress

verb
  • To check; to keep back. 

  • To press again. 

  • To forcefully prevent an upheaval from developing further. 

noun
  • A record pressed again; a repressing. 

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