disserve vs mangle

disserve

verb
  • To treat poorly; to do a disservice to 

mangle

verb
  • To change, mutilate, or disfigure by cutting, tearing, rearranging, etc. 

  • To modify (an identifier from source code) so as to produce a unique identifier for internal use by the compiler, etc. 

noun
  • A mangrove (tree). 

  • A hand-operated device with rollers, for wringing laundry. 

  • The mangle attached to wringer washing machines, often called the wringer. 

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