garget vs skokeberry

garget

noun
  • Pokeweed. 

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

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

skokeberry

noun
  • A pokeberry; a pokeweed (the plant Phytolacca americana or its dark red or purple fruit). 

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