Aaronic vs pastoral

Aaronic

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

  • Of or pertaining to the lower order of priests. 

  • Pertaining to Aaron (elder brother of Moses). 

pastoral

adj
  • Relating to the care of souls, to the pastor of a church or to any local religious leader charged with the service of individual parishioners, i.e. a priest or rabbi. 

  • Of or pertaining to shepherds or herders of other livestock. 

  • Relating to rural life and scenes, in particular of poetry. 

noun
  • A letter of a pastor to his charge; specifically, a letter addressed by a bishop to his diocese. 

  • A cantata relating to rural life; a composition for instruments characterized by simplicity and sweetness; a lyrical composition the subject of which is taken from rural life. 

  • A letter of the House of Bishops, to be read in each parish. 

  • A poem describing the life and manners of shepherds; a poem in which the speakers assume the character of shepherds; an idyll; a bucolic. 

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