keep in reserve vs store

keep in reserve

store

verb
  • To keep (something) while not in use, generally in a place meant for that purpose. 

  • To write (something) into memory or registers. 

  • Contain. 

  • Have the capacity and capability to contain. 

noun
  • A head of store cattle (feeder cattle to be sold to others for finishing); a store cattle beast. 

  • A supply held in storage. 

  • A great quantity or number; abundance. 

  • A place where items may be purchased; a shop. 

  • A place where items may be accumulated or routinely kept. 

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