apropos vs seemly

apropos

adj
  • Of an appropriate or pertinent nature. 

  • by the way, incidental 

prep
  • Regarding or concerning. 

adv
  • To the purpose; appropriately. 

  • By the way. 

  • Timely; at a good time. 

seemly

adj
  • Appropriate; suited to the occasion or purpose; becoming. 

adv
  • Appropriately, fittingly. 

How often have the words apropos and seemly occurred in a corpus of books? (source: Google Ngram Viewer )