swamp water vs tomb

swamp water

noun
  • Synonym of suicide (“beverage combining all available flavors at a soda fountain”) 

  • Used other than figuratively or idiomatically: see swamp, water. 

tomb

noun
  • A pit in which the dead body of a human being is deposited; a grave. 

  • A small building (or "vault") for the remains of the dead, with walls, a roof, and (if it is to be used for more than one corpse) a door. It may be partly or wholly in the ground (except for its entrance) in a cemetery, or it may be inside a church proper or in its crypt. Single tombs may be permanently sealed; those for families (or other groups) have doors for access whenever needed. 

  • One who keeps secrets. 

verb
  • To bury. 

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