adarme vs dirhem

adarme

noun
  • A traditional Spanish unit of mass, equivalent to about 1.8 g. 

  • Synonym of peso, during periods when it was a Spanish coin notionally equivalent to an adarme of gold. 

dirhem

noun
  • A former small Turkish unit of weight, variously reckoned as 1.5–3.5 g (0.05–0.12 oz.). 

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