above-board vs attentive

above-board

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

adv
  • Honestly; openly. 

attentive

adj
  • Paying attention; noticing, watching, listening, or attending closely. 

  • Courteous; mindful. 

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