prolific vs uncommon

prolific

adj
  • Similarly producing results or performing deeds in abundance 

  • Fertile; producing offspring or fruit in abundance — applied to plants producing fruit, animals producing young, etc. 

  • Of a flower: from which another flower is produced. 

uncommon

adj
  • Rare; not readily found; unusual. 

  • Remarkable; exceptional. 

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