plenum vs ream

plenum

noun
  • A state of fullness, a great quantity (of something). 

  • An enclosed space having greater than atmospheric pressure. 

  • The space above a false ceiling used for cables, ducts etc. 

  • A type of network cabling which satisfies plenum-ratings issued by the National Electrical Code. These cables produce less smoke and fumes in the event of fire. 

  • A legislative meeting (especially of the Communist Party) in which all members are present. 

  • A space that is completely filled with matter. 

ream

noun
  • An abstract large amount of something. 

  • Cream; also, the creamlike froth on ale or other liquor; froth or foam in general. 

  • A bundle, package, or quantity of paper, nowadays usually containing 500 sheets. 

verb
  • To sexually penetrate in a rough and painful way. 

  • To yell at or berate. 

  • To enlarge a hole, especially using a reamer; to bore a hole wider. 

  • To shape or form, especially using a reamer. 

  • To cream; mantle; foam; froth. 

  • To remove (material) by reaming. 

  • To remove burrs and debris from a freshly bored hole. 

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