disassociate vs set free

disassociate

verb
  • To separate; to disunite; to disintegrate; to dissolve. 

  • To separate into smaller discrete units, as with analysis. 

  • To separate (oneself); to dissolve one's association with a person, group, or situation. 

set free

verb
  • To release, to free, to give freedom to. 

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