above-board vs unostentatious

above-board

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

adv
  • Honestly; openly. 

unostentatious

adj
  • Not ostentatious; simple; unpresuming. 

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