above-board vs purely

above-board

adv
  • Honestly; openly. 

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

purely

adv
  • Wholly; really, completely. 

  • Chastely, innocently; in a sinless manner, without fault. 

  • Solely; exclusively; merely, simply. 

adj
  • without physical adulterants; with no admixture 

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