incompletion vs unripeness

incompletion

noun
  • The state or quality of not being complete. 

  • A forward pass which is not caught inbounds by the intended receiver. 

  • Something which is not completed. 

unripeness

noun
  • the state or property of being unripe 

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