Jehovah vs Yahuwah

Jehovah

name

  • The personal name of God in the Hebrew Scriptures; in Hebrew, יהוה (YHVH) 

noun

  • A Jehovah's Witness. 

Yahuwah

name

  • Name of the Abrahamic deity according to some interpretations of the Hebrew scriptures. 

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