above-board vs compatible

above-board

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

adv
  • Honestly; openly. 

compatible

adj
  • Capable of easy interaction. 

  • Able to get along well. 

  • Consistent; congruous. 

noun
  • Something that is compatible with something else. 

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