alter vs doublecross

alter

noun
  • An identity or headmate of a person with dissociative identity disorder (previously known as multiple personality disorder). A member of a system. 

verb
  • To castrate, neuter or spay (a dog or other animal). 

  • To change the form or structure of. 

  • To tailor clothes to make them fit. 

  • To become different. 

  • To affect mentally, as by psychotropic drugs or illness. 

doublecross

noun
  • An instance of betrayal of one who has been led to believe that the betrayer was assisting them. 

  • The hybrid product of double-crossing. 

verb
  • To betray someone by leading them into a trap after having gained their trust and led them to believe that they were actually being aided. 

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