sept vs sodality

sept

noun
  • A clan, tribe, or family, proceeding from a common progenitor; especially, one of the ancient clans of Ireland. 

  • An enclosure; a railing. 

sodality

noun
  • A fraternity, a society or association. 

  • Companionship. 

  • Spiritual communion with a divine being, a fellowship 

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