shipwreck vs sinkage

shipwreck

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 

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

sinkage

noun
  • An amount of material involved in a sinking. 

  • An area of sunken ground; a depression. 

  • The change in draft that a vessel obtains when moving through the water. 

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