classis vs divisio

classis

noun
  • A category in the classification of organisms, ranking below divisio and above ordo. 

  • An ecclesiastical body or judicatory in certain churches, such as the Reformed Dutch. It is intermediate between the consistory and the synod, and corresponds to the presbytery in the Presbyterian church. 

divisio

noun
  • A category in the classification of organisms, ranking below regnum and above classis. 

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