break ground vs furrow

break ground

verb
  • To begin digging in the earth at the start of a new construction, or, originally, for cultivation. 

  • To initiate a new venture, or to advance beyond previous achievements. 

  • To separate from the ground on takeoff; to become airborne. 

  • To lift off the sea bottom when being weighed. 

furrow

verb
  • To cut one or more grooves in (the ground, etc.). 

  • To wrinkle. 

  • To pull one's brows or eyebrows together due to concentration, worry, etc. 

noun
  • A trench cut in the soil, as when plowed in order to plant a crop. 

  • Any trench, channel, or groove, as in wood or metal. 

  • A deep wrinkle in the skin of the face, especially on the forehead. 

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