first minister vs minister

first minister

noun
  • The principal minister of a ruler or state. 

  • A leader of a devolved government such as Scotland, Wales, or Northern Ireland. 

  • The prime minister or a provincial or territorial premier. 

minister

noun
  • A politician who heads a ministry (national or regional government department for public service). 

  • A person who is trained to preach, to perform religious ceremonies, and to afford pastoral care at a Protestant church. 

  • A servant; a subordinate; an officer or assistant of inferior rank; hence, an agent, an instrument. 

  • In diplomacy, the rank of diplomat directly below ambassador. 

verb
  • To attend to (the needs of); to tend; to take care (of); to give aid; to give service. 

  • to function as a clergyman or as the officiant in church worship 

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