outgrowth vs swelling

outgrowth

noun
  • Excessive growth. 

  • An appendage of an animal. 

  • A branch or offshoot of a plant. 

  • A byproduct or consequence of an action or event. 

swelling

noun
  • The state of being swollen. 

  • Anything swollen, especially any abnormally swollen part of the body. 

  • A rising, as of passion or anger. 

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