operation vs working

operation

noun
  • 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. 

  • A surgical procedure. 

working

noun
  • Operation; action. 

  • Method of operation. 

  • Becoming full of a vegetable substance. 

  • The incidental or subsidiary calculations performed in solving an overall problem. 

  • A train movement. 

  • Fermentation. 

  • A place where work is carried on. 

adj
  • In paid employment. 

  • Enough to allow one to use something. 

  • Used in real life; practical. 

  • Of or relating to employment. 

  • That suffices but requires additional work. 

  • That is or are functioning. 

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