adulthood vs pinnacle

adulthood

noun
  • The state or condition of a human being once it has reached physical maturity, and is presumed to have reached a state of psychological maturity, to wit: once it has become an adult. 

  • The time period of a human being's majority; the time during which a human being has reached physical maturity, and ending with its death. 

pinnacle

verb
  • To place on a pinnacle. 

  • To build or furnish with a pinnacle or pinnacles. 

noun
  • An upright member, generally ending in a small spire, used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire. 

  • The highest point. 

  • Coordinate term: sea stack 

  • A tall, sharp and craggy rock or mountain. 

  • An all-time high; a point of greatest achievement or success. 

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