ancestry vs dynasty

ancestry

noun
  • A series of ancestors or progenitors; lineage, or those who compose the line of natural descent. 

  • Condition as to ancestors; ancestral lineage; hence, birth or honorable descent. 

dynasty

noun
  • A series of rulers or dynasts from one family. 

  • The polity or historical era under the rule of a certain dynasty. 

  • A team or organization which has an extended period of success or dominant performance. 

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