contemporary vs twenty-first-century

contemporary

noun

  • Someone or something living at the same time, or of roughly the same age as another. 

  • Something existing at the same time. 

adj

  • Modern, of the present age (shorthand for ‘contemporary with the present’). 

  • From the same time period, coexistent in time; contemporaneous. 

twenty-first-century

How often have the words contemporary and twenty-first-century occurred in a corpus of books? (source: Google Ngram Viewer )