Franciscan vs abbot

Franciscan

noun
  • A monk or nun of related orders such as the Poor Clares. 

  • A member of the Order of the Friars Minor. 

adj
  • Of or related to the Franciscans. 

  • Of or related to St Francis of Assisi. 

abbot

noun
  • The superior or head of an abbey or monastery. 

  • The pastor or administrator of an order, including minor and major orders starting with the minor order of porter. 

  • A layman who received the abbey's revenues, after the closing of the monasteries. 

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