clerical vs hierarchical

clerical

adj
  • Of or relating to the clergy. 

  • Of or relating to clerks or their work. 

noun
  • Clerical garments. 

  • A member of the clergy. 

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 clerical and hierarchical occurred in a corpus of books? (source: Google Ngram Viewer )