outgrowth vs tumescence

outgrowth

noun
  • An appendage of an animal. 

  • A branch or offshoot of a plant. 

  • Excessive growth. 

  • A byproduct or consequence of an action or event. 

tumescence

noun
  • A swollen bodily organ; used especially of erectile tissue. 

  • A swelling due to the presence of fluid. 

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