recollection vs separation

recollection

noun
  • The act or practice of collecting or concentrating the mind; concentration; self-control. 

  • The act of recollecting, or recalling to the memory; the act of recalling to memory. 

  • That which is recollected; something called to mind; a reminiscence. 

  • A spiritual retreat, especially one that is short. 

  • Process of collecting again. 

  • The power of recalling ideas to the mind, or the period within which things can be recollected; remembrance. 

separation

noun
  • Departure from active duty, while not necessarily leaving the service entirely. 

  • An agreement legalizing such an arrangement. 

  • An object that separates two spaces. 

  • The act of disuniting two or more things, or the condition of being separated. 

  • The act or condition of two or more people being separated from one another. 

  • The place at which a division occurs. 

  • An interval, gap or space that separates things or people. 

  • The act or condition of a married couple living in separate homes while remaining legally married. 

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