ancestry vs outgrowth

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. 

outgrowth

noun
  • A branch or offshoot of a plant. 

  • An appendage of an animal. 

  • Excessive growth. 

  • A byproduct or consequence of an action or event. 

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