ebb vs neap tide

ebb

noun
  • The receding movement of the tide. 

  • A European bunting, the corn bunting (Emberiza calandra, syns. Emberiza miliaria, Milaria calandra). 

  • A gradual decline. 

  • A low state; a state of depression. 

adj
  • low, shallow 

verb
  • to fish with stakes and nets that serve to prevent the fish from getting back into the sea with the ebb 

  • To cause to flow back. 

  • to flow back or recede 

  • to fall away or decline 

neap tide

noun
  • The tide which occurs just after the first and third quarters of the moon, when there is least difference between high tide and low tide. 

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