errand boy vs nuncio

errand boy

noun
  • Someone in a responsible position who performs relatively menial tasks for a senior manager. 

  • A male employed to run errands. 

nuncio

noun
  • One who bears a message; a messenger. 

  • Any member of any Sejm of the Kingdom of Poland, Polish–Lithuanian Commonwealth, Galicia (of the Austrian Partition), Duchy of Warsaw, Congress Poland, or Grand Duchy of Posen. 

  • The ecclesiastic title of a permanent diplomatic representative of the Roman Catholic Church to a sovereign state or international organization, who is accorded a rank equivalent to an accredited ambassador, and may also be given additional privileges including recognition as Dean in a country's diplomatic corps. 

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