radiation vs ramification

radiation

noun
  • A rapid diversification of an ancestral species into many new forms. 

  • The transfer of energy via radiation. 

  • The shooting forth of anything from a point or surface, like diverging rays of light. 

  • The process of radiating waves or particles. 

  • Radioactive energy. 

ramification

noun
  • A branching-out, the act or result of developing branches; specifically the divergence of the stem and limbs of a plant into smaller ones, or of similar developments in blood vessels, anatomical structures etc. 

  • An arrangement of branches. 

  • An offshoot of a decision, fact etc.; a consequence or implication, especially one which complicates a situation. 

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