elderdom vs head start

elderdom

noun
  • Preeminence; superiority. 

  • The role or influence of an elder or elders. 

  • The authority, rule, or office of an elder. 

  • The state of being an elder, or of being older; elderhood. 

  • Authority; dominion. 

head start

noun
  • A factor conducive to superiority and success. 

  • An advantage consisting in starting a competition or task earlier than might be expected; given (or taken), for example, prior to the beginning of a race. 

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