cowherd vs dudette

cowherd

noun
  • A person who herds cattle; a cowboy. 

dudette

noun
  • A cowgirl, especially a tenderfoot. 

  • A girl or woman. 

  • A cowboy's wife, or a woman who moves out west with the intention of marrying a cowboy. 

  • A girl or woman who is noted for being tough or capable. 

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