athame vs katara

athame

noun
  • A ceremonial pointed knife or dagger, used especially in Wicca and other neopagan traditions and typically having a black handle with magical symbols on it. 

katara

noun
  • An Indian push dagger with an H-shaped handle, used predominantly ceremonially, and rarely as a weapon. 

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