operation vs proceeding

operation

noun
  • A business or organization. 

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

  • The method by which a device performs its function. 

  • A surgical procedure. 

proceeding

noun
  • A measure or step taken in a course of business; a transaction 

  • An event or happening; something that happens 

  • A published collection of papers presented at an academic conference, or representing the acts of a learned society. 

  • The act of one who proceeds, or who prosecutes a design or transaction 

  • Progress or movement from one thing to another. 

  • Any legal action, especially one that is not a lawsuit. 

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