classis vs phylum

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. 

phylum

noun
  • A rank in the classification of organisms, below kingdom and above class; also called a divisio or a division, especially in describing plants; a taxon at that rank 

  • A large division of possibly related languages, or a major language family which is not subordinate to another. 

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