dawn vs early

dawn

noun
  • The morning twilight period immediately before sunrise. 

  • The rising of the sun. 

  • The earliest phase of something. 

  • The time when the sun rises. 

verb
  • To begin to give promise; to begin to appear or to expand. 

  • To begin to brighten with daylight. 

  • To start to appear or be realized. 

early

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

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. 

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

  • Soon; in good time; seasonably. 

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