excision vs operation

excision

noun
  • The removal of something (a tumor or body part) by cutting. 

  • The removal of some text during editing. 

  • The removal of a gene from a section of genetic material. 

  • The fact that, under certain hypotheses, the homology of a space relative to a subspace is unchanged by the identification of a subspace of the latter to a point. 

operation

noun
  • A surgical procedure. 

  • The method or practice by which actions are done. 

  • The act or process of operating; agency; the exertion of power, physical, mechanical, or moral. 

  • A procedure for generating a value from one or more other values (the operands); 

  • A military campaign (e.g. Operation Desert Storm) 

  • A planned undertaking. 

  • A business or organization. 

  • a function which maps zero or more (but typically two) operands to a single output value. 

  • The method by which a device performs its function. 

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