aftereffect vs outgrowth

aftereffect

noun
  • Any delayed effect; an effect which is not immediately manifested. 

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 aftereffect and outgrowth occurred in a corpus of books? (source: Google Ngram Viewer )