godhead vs supreme being

godhead

noun
  • Any deity or idol. 

  • Divinity or godhood, divine essence or nature. 

  • God. 

  • An admired or influential person or entity. 

supreme being

noun
  • A god, or a similar deity, characterized by power over all things. 

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