envoy vs medial

envoy

noun
  • A messenger. 

  • A diplomat. 

  • A representative. 

  • A diplomatic agent of the second rank, next in status after an ambassador. 

medial

noun
  • One or more letters that occur in the middle of a word. 

  • Any of various things that occur in the middle. 

adj
  • Of or pertaining to the media and/or the areas of the wing next to it. 

  • Pertaining to the inside; closer to the median plane of the body or the midline of an organ. 

  • (of a speech sound) In the middle of a word. 

  • Closer to the addressee. 

  • Of or pertaining to a mean or average. 

  • Pertaining to the middle layer of a blood vessel, to its tunica media. 

  • (of a consonant) Central: produced when air flows across the center of the mouth over the tongue. 

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