Aaronic vs ecclesiastical

Aaronic

adj
  • Of or pertaining to the lower order of priests. 

  • Pertaining to or characteristic of a high priest; priestly. 

  • Pertaining to Aaron (elder brother of Moses). 

ecclesiastical

adj
  • Of or pertaining to the church. 

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