memory vs survival

memory

noun
  • The time within which past events can be or are remembered. 

  • Which returns to its original shape when heated 

  • A term of venery for a social group of elephants, normally called a herd. 

  • The ability of the brain to record information or impressions with the facility of recalling them later at will. 

  • A record of a thing or an event stored and available for later use by the organism. 

  • The part of a computer that stores variable executable code or data (RAM) or unalterable executable code or default data (ROM). 

  • Synonym of pelmanism (“memory card game”). 

survival

noun
  • A custom or belief that persists in folklore from earlier times, when the rationale behind it is forgotten. 

  • The fact or act of surviving; continued existence or life. 

  • The avoidance of relegation or demotion to a lower league or division. 

  • Of, relating to or aiding survival. 

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