derived vs sterile

derived

adj
  • A product of derivation 

  • Of, or pertaining to, conditions unique to the descendant species of a clade, and not found in earlier ancestral species. 

sterile

adj
  • Fruitless, uninspiring, or unproductive. 

  • Terse; lacking sentiment or emotional stimulation, as in a manner of speaking. 

  • Unable to reproduce (or procreate). 

  • Of weapons: foreign-made and untraceable to the United States. 

  • Germless; free from all living or viable microorganisms. 

  • Free from dangerous objects, as a zone in an airport that can be only be entered via a security checkpoint. 

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