mouton vs sheepmeat

mouton

noun
  • Sheepskin processed to resemble beaver or seal fur. 

  • A 14th-century French gold coin, weighing about 70 grains. 

sheepmeat

noun
  • The meat of a sheep, used as food; mutton. 

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