nonjuvenile vs senile

nonjuvenile

adj
  • Not juvenile; adult. 

noun
  • One who is not a juvenile. 

senile

adj
  • Of, or relating to old age. 

  • Exhibiting the deterioration in mind and body often accompanying old age; doddering. 

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