quantity vs reservoir

quantity

noun
  • An indefinite amount of something. 

  • Length of sounds. 

  • Indicates that the entire preceding expression is henceforth considered a single object. 

  • A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items. 

  • A specific measured amount. 

  • A considerable measure or amount. 

  • Property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as number and a reference. 

reservoir

noun
  • A supply or source of something. 

  • A species that acts as host to a zoonosis when it is not causing acute illness in other susceptible species. 

  • A "black box" component that receives an input signal to be read out and mapped by another process, as part of reservoir computing. 

  • A small intercellular space, often containing resin, essential oil, or some other secreted matter. 

  • A large natural or artificial lake used as a source of water supply. 

  • A place where anything is kept in store. 

verb
  • To store or keep (something) in or as in a reservoir. 

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