Godhead vs king of kings

Godhead

name

  • The Trinity. 

  • The divine nature of God as an abstract entity. 

king of kings

name

  • Jesus Christ. 

  • The title of an individual king who has other kings as subjects; in particular 

noun

  • A king who has other kings as subjects; an emperor. 

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