engendering vs fructification

engendering

noun
  • The act by which something is engendered. 

fructification

noun
  • The act of forming or producing fruit; the act of fructifying, or rendering productive of fruit; fecundation. 

  • The collective organs by which a plant produces its fruit, or seeds, or reproductive spores. 

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