strength vs vim

strength

noun
  • The quality or degree of being strong. 

  • The intensity of a force or power; potency. 

  • The strongest part of something; that on which confidence or reliance is based. 

  • A positive attribute. 

vim

noun
  • Ready vitality and vigour. 

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