above-board vs clearly

above-board

adv
  • Honestly; openly. 

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

clearly

adv
  • Without a doubt; obviously. 

  • To a degree clearly discernible. 

  • In a clear manner. 

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