governance vs headship

governance

noun
  • The group of people who make up an administrative body. 

  • The process, or the power, of governing; government or administration. 

  • Accountability for consistent, cohesive policies, processes and decision rights. 

  • The state of being governed. 

  • The specific system by which a political system is ruled. 

headship

noun
  • The position of a head or chief. 

  • The position of a headmaster or headmistress. 

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