ecclesiastic vs hierarchical

ecclesiastic

adj
  • Of or pertaining to the church; ecclesiastical. 

noun
  • A cleric. 

hierarchical

adj
  • Of or pertaining to an ecclesiastic or priestly order. 

  • Pertaining to a hierarchy. 

  • Classified or arranged according to various criteria into successive ranks or grades. 

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