inflood vs tidal wave

inflood

noun
  • The act or process of flooding or flowing in; an inflow or influx. 

verb
  • Of a river, water, etc.: to flood or flow into (a place). 

  • To flood or flow in; to inflow. 

tidal wave

noun
  • A large, sudden inundation of water from the storm surge, or waves of that surge; a sudden surge of river water. 

  • A large, sudden, and disastrous wave of water caused by a tremendous disturbance in the ocean; a tsunami. (See Usage notes below.) 

  • A crest of ocean water resulting from tidal forces. 

  • A sudden and powerful surge. 

  • A large and sudden rise and fall in the tide. 

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