break-off vs lull

break-off

noun
  • A break, discontinuance, or interruption 

  • That which breaks off, or is broken off 

  • The first shot in a game of snooker or other cue-game 

verb
  • To play the first shot in a game of snooker 

lull

noun
  • A period of reduced activity; a respite 

  • A period of rest or soothing. 

  • A period without waves or wind. 

  • An extended pause between sets of waves. 

verb
  • To cause to rest by soothing influences; to compose; to calm 

  • To become gradually calm; to subside; to cease or abate. 

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