drenching vs plunging

drenching

noun
  • The act by which something is drenched; a soaking. 

  • The administering of a medicinal draught to an animal. 

plunging

noun
  • An occurrence of putting or sinking under water or other fluid. 

  • A headlong violent motion like that of a horse trying to throw its rider. 

adj
  • That descends steeply. 

  • Aimed from higher ground, as fire upon an enemy. 

  • Very low-cut. 

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