adult vs antiquate

adult

verb
  • To (cause to) be or become an adult. 

  • To behave like an adult. 

noun
  • A fully grown human or animal. 

  • A person who has reached the legal age of majority. 

adj
  • Containing situations or discussions intended primarily for adults, such as serious crime, illicit drug use, extramarital affairs, etc. 

  • Containing marijuana, intended for consumption only by adults. 

  • Fully grown. 

  • Containing material of an explicit sexual nature; of, or pertaining to, pornography. 

  • Containing excessive vulgar or profane speech, text or images, intended only for adults. 

  • Intended for or restricted to adults rather than children due to size, maturity, knowledge level, judgement, etc. 

  • Containing alcohol, intended for consumption only by adults. 

antiquate

verb
  • To cause to become old or obsolete. 

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