drag up vs propagate

drag up

verb
  • Used other than figuratively or idiomatically: see drag, up. 

  • To educate reluctant pupils. 

  • To remind people of something, usually unpleasant, from the past. 

propagate

verb
  • To cause to take effect on all relevant devices in a network. 

  • To spread from person to person; to extend the knowledge of; to originate and spread; to carry from place to place; to disseminate. 

  • To produce young; to be produced or multiplied by generation, or by new shoots or plants. 

  • To cause to spread to extend; to impel or continue forward in space. 

  • To cause to continue or multiply by generation, or successive production. 

  • To generate; to produce. 

  • To take effect on all relevant devices in a network. 

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