commencement vs early

commencement

noun
  • The day when degrees are conferred by colleges and universities upon students and others. 

  • The first existence of anything; act or fact of commencing; the beginning. 

  • A graduation ceremony, from a school, college or university. 

early

noun
  • A shift (scheduled work period) that takes place early in the day. 

adv
  • At a time before expected; sooner than usual. 

  • Soon; in good time; seasonably. 

adj
  • Near the start or beginning. 

  • Near the start of the day. 

  • Having begun to occur; in its early stages. 

  • At a time in advance of the usual or expected event. 

  • Arriving a time before expected; sooner than on time. 

  • Of a star or class of stars, hotter than the sun. 

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