hardcore vs nonjuvenile

hardcore

adj
  • Obscene or explicit. 

  • Having an extreme dedication to a certain activity. 

  • Particularly intense; thrillingly dangerous or erratic; desirably violent in appearance; pleasing or "cool" due to intensity or danger. 

  • Resistant to change. 

  • Depicting penetration and abnormal sexual activity. 

  • Faster or more intense than the regular style. 

noun
  • Outlaw country. 

  • Jungle. 

  • Gangsta rap. 

  • Broken bricks, stone and/or other aggregate used as foundations, especially in road and path laying. 

  • Hardcore punk. 

  • Hardcore techno. 

nonjuvenile

adj
  • Not juvenile; adult. 

noun
  • One who is not a juvenile. 

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