bota bag vs kidskin

bota bag

noun
  • A traditional Greek or Spanish wineskin bag. Typically it is made of leather, and is used to carry wine, although any liquid can be carried. 

kidskin

noun
  • The leather made from such skins. 

  • The skin or hide of a kid, i.e., a young goat. 

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