antiquity vs the olden days

antiquity

noun
  • A relic or monument of ancient times, such as a coin, a statue, etc.; an ancient institution. 

  • The people of ancient times. 

  • Ancient times; faraway history; former ages 

  • The historical period preceding the Middle Ages (c. 500-1500), primarily relating to European history. 

  • The state of being ancient or of ancient lineage. 

the olden days

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