yearhundred vs yearthousand

yearhundred

noun

  • A period of a hundred consecutive years; a century. 

  • Holonym: yearthousand 

yearthousand

noun

  • A millennium (a period of a thousand years). 

  • Meronym: yearhundred 

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