systemic vs uncommon

systemic

adj
  • Pertaining to an entire organism. 

  • Embedded within and spread throughout and affecting a whole system, group, body, economy, market, or society. 

uncommon

adj
  • Rare; not readily found; unusual. 

  • Remarkable; exceptional. 

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