indoor baseball vs townball

indoor baseball

noun
  • A form of baseball, played in a gymnasium or similar venue, using a soft ball. 

townball

noun
  • Modern historical recreation of the predecessor to baseball. 

  • Any of various games resembling rounders and baseball, played in North America in the 18th and 19th centuries. 

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