above-board vs fraudulent

above-board

adj

  • In open sight; without trick, concealment, or deception. 

adv

  • Honestly; openly. 

fraudulent

adj

  • False, phony. 

  • Dishonest; based on fraud or deception. 

How often have the words above-board and fraudulent occurred in a corpus of books? (source: Google Ngram Viewer )