American pokeweed vs garget

American pokeweed

noun
  • Phytolacca americana, pokeweed. 

garget

noun
  • Pokeweed. 

  • An inflammation on a cow's or sheep's udder. 

  • A distemper in pigs accompanied by staggering and loss of appetite. 

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