truth-telling vs up front

truth-telling

adj
  • Telling the truth; honest, frank. 

noun
  • The act of telling the truth. 

up front

adj
  • Open, honest; tending to disclose information; truthful. 

adv
  • At the beginning; before anything begins. 

  • At the front. 

  • In an attacking position. 

How often have the words truth-telling and up front occurred in a corpus of books? (source: Google Ngram Viewer )