shipwreck vs undermine

shipwreck

verb
  • To wreck a boat through a collision or mishap. 

noun
  • An event where a ship sinks or runs aground. 

  • A ship that has sunk or run aground so that it is no longer seaworthy. 

  • destruction; ruin; irretrievable loss 

undermine

verb
  • To weaken or work against; to hinder, sabotage. 

  • To erode the base or foundation of something, e.g. by the action of water. 

  • To dig underneath (something), to make a passage for destructive or military purposes; to sap. 

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