head start vs spurt

head start

noun
  • 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. 

  • A factor conducive to superiority and success. 

spurt

noun
  • A sudden brief burst of, or increase in, speed, effort, activity, emotion or development. 

  • Ejaculation of semen. 

  • The act of spurting, or something spurted 

  • A brief gush, as of liquid spurting from an orifice or a cut/wound. 

  • A moment, a short period of time. 

verb
  • To make a strong effort for a short period of time. 

  • To rush from a confined place in a small stream or jet. 

  • To cause to gush out suddenly or violently in a stream or jet. 

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