as straight as a die vs candid

as straight as a die

candid

adj

  • Not posed or rehearsed. 

  • Impartial and free from prejudice. 

  • Straightforward, open and sincere. 

noun

  • A spontaneous or unposed photograph. 

How often have the words as straight as a die and candid occurred in a corpus of books? (source: Google Ngram Viewer )