outbreak vs seaquake

outbreak

noun
  • An outburst or sudden eruption, especially of violence and mischief. 

  • An eruption; the sudden appearance of a rash, disease, etc. 

  • Synonym of breakout (“escape from prison”) 

  • A sudden increase. 

verb
  • To burst out or break forth. 

seaquake

noun
  • A hydrostatic pressure disturbance caused by an earthquake or volcano in the seabed. 

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