myrmidon vs servant

myrmidon

noun
  • A soldier or a subordinate civil officer who executes orders of a superior without protest or pity (sometimes applied to bailiffs, constables, etc). 

servant

noun
  • One who is hired to perform regular household or other duties, and receives compensation. As opposed to a slave. 

  • A person of low condition or spirit. 

  • One who serves another, providing help in some manner. 

  • A person who dedicates themselves to God. 

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