GOD vs Jehovah

GOD

name

  • Typographical variant of God, particularly in English translations of the Bible. 

Jehovah

name

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

noun

  • A Jehovah's Witness. 

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