explain vs pirate

explain

verb
  • To make plain, manifest, or intelligible; to clear of obscurity; to illustrate the meaning of. 

  • To give a valid excuse for past behavior. 

  • To make something plain or intelligible. 

pirate

noun
  • A bird which practises kleptoparasitism. 

  • A kind of marble in children's games. 

  • A criminal who plunders at sea; commonly attacking merchant vessels, though often pillaging port towns. 

  • An armed ship or vessel that sails for the purpose of plundering other vessels. 

  • One who breaks intellectual property laws by reproducing protected works without permission. 

adj
  • Illegally imitated or reproduced, said of a trademarked product or copyrighted work, or of the counterfeit itself. 

verb
  • To knowingly obtain an unauthorized copy of. 

  • To create and/or sell an unauthorized copy of. 

  • To appropriate by piracy; to plunder at sea. 

  • To engage in piracy. 

  • To entice an employee to switch from a competing company to one's own. 

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