handy vs operant

handy

noun
  • A hand job. 

  • A handgun. 

  • Synonym of mobile phone 

  • The hand. 

adj
  • Of a freight ship: having a small cargo capacity (less than 40,000 DWT); belonging to the handysize class. 

  • Of a person: dexterous, skilful. 

  • Nearby, within reach. 

  • Physically violent; tending to use one's fists. 

  • Easy to use, useful. 

operant

noun
  • An operative person or thing. 

  • Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment. 

adj
  • That operates to produce an effect. 

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