disassociate vs pal 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. 

pal up

verb
  • to become friends with. 

  • To form a small group. 

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