Jehovah vs Witness

Jehovah

noun

  • A Jehovah's Witness. 

name

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

Witness

noun

  • Jehovah's Witness 

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