sanctuary vs sanctum sanctorum

sanctuary

noun
  • A place of safety, refuge, or protection. 

  • A state of being protected, asylum. 

  • The consecrated (or sacred) area of a church or temple around its tabernacle or altar. 

  • My car is a sanctuary, where none can disturb me except for people who cut me off. 

  • An area set aside for protection. 

sanctum sanctorum

noun
  • A person's most private retreat or sanctuary. 

  • The Holy of Holies in the Jewish temple. 

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