batting vs chiropter

batting

noun
  • The act of someone who bats. 

  • Special cotton for surgery. 

  • The action of using a bat. 

  • Cotton, wool, silk or synthetic material used to stuff the inside of a mattress, quilt etc. 

chiropter

noun
  • A member of the order Chiroptera, a bat 

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