feints vs tailings

feints

noun
  • The weak spirit produced at the end of distillation (the weak feints); sometimes also the impure spirit produced at the beginning of distillation (the strong feints), much impregnated with fusel oil. 

tailings

noun
  • The feints, the last fraction of product obtained at the end of distillation. 

  • The waste that remains after the minerals have been extracted from an ore by ore dressing. 

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