frock vs mufti

frock

noun
  • An undress regimental coat. 

  • An outer garment worn by priests and other clericals; a habit. 

  • A sailor's jersey. 

  • A frog. 

  • A dress, a piece of clothing, which consists of a skirt and a cover for the upper body. 

verb
  • To make (somebody) a cleric. 

  • To clothe (somebody) in a frock. 

  • To grant to an officer the title and uniform of a rank he will soon be promoted to. 

mufti

noun
  • A civilian dress when worn by a member of the military, or casual dress when worn by a pupil of a school who normally would wear uniform. 

  • A Muslim scholar and interpreter of shari’a law, who can deliver a fatwa. 

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