plough into vs splash down

plough into

verb
  • To crash into something. 

  • To engage in some activity with vigor. 

  • To invest a resource (money, material, energy) into something. 

splash down

verb
  • To land in water. 

  • To appear, seemingly from nowhere. 

How often have the words plough into and splash down occurred in a corpus of books? (source: Google Ngram Viewer )