leadership vs ordo

leadership

noun
  • The office or status of a leader. 

  • The capacity of someone to lead others. 

  • A group of leaders. 

ordo

noun
  • an established civil body or corporation with a hierarchy 

  • 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. 

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

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