decoct vs plaw

decoct

verb
  • To heat as if by boiling. 

  • To reduce or diminish. 

  • To make an infusion. 

  • To digest in the stomach. 

  • To devise. 

  • To reduce, or concentrate by boiling down. 

plaw

verb
  • To boil; seethe. 

  • To boil; boil slightly; parboil. 

noun
  • A boiling. 

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