disassociate vs gang up

disassociate

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

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

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

gang up

verb
  • To join together, as a gang. 

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