disassociate vs dismount

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. 

dismount

verb
  • To come down; to descend. 

  • To throw (cannon) off their carriages. 

  • To make (a mounted drive) unavailable for use. 

  • To (cause to) get off (something). 

noun
  • The part of a routine in which the gymnast detaches from an apparatus. 

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