contusion vs outgrowth

contusion

noun
  • Synonym of bruising. 

  • Synonym of bruise. 

outgrowth

noun
  • A byproduct or consequence of an action or event. 

  • An appendage of an animal. 

  • A branch or offshoot of a plant. 

  • Excessive growth. 

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