kingdom vs ordo

kingdom

noun
  • A rank in the classification of organisms, below domain and above phylum; a taxon at that rank (e.g. the plant kingdom, the animal kingdom). 

  • A realm, region, or conceptual space where something is dominant. 

  • A realm having a king and/or queen as its actual or nominal sovereign. 

ordo

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

  • A calendar which prescribes the Mass and office which is to be celebrated each day. 

  • A musical phrase constructed from one or more statements of one modal pattern and ending in a rest. 

  • an established civil body or corporation with a hierarchy 

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