bottom vs life raft

bottom

noun
  • Certain parts of a vessel, particularly the cargo hold or the portion of the ship that is always underwater. 

  • Low-lying land near a river with alluvial soil. 

  • The far end of somewhere. 

  • A ball or skein of thread; a cocoon. 

  • A submissive in sadomasochistic sexual activity. 

  • The buttocks or anus. 

  • Low-lying land; a valley or hollow. 

  • The second half of an inning, the home team's turn at bat. 

  • A cargo vessel, a ship. 

  • A man who prefers the receptive role in anal sex with men. 

  • Character, reliability, staying power, dignity, integrity or sound judgment. 

  • The base; the fundamental part; basic aspect. 

  • A garment worn to cover the body below the torso. 

  • An abyss. 

  • The lowest part of anything. 

  • Spirits poured into a glass before adding soda water. 

  • The lowest part of a container. 

  • The bed of a body of water, as of a river, lake, or sea. 

verb
  • To pour spirits into (a glass to be topped up with soda water). 

  • To establish or found (something) on or upon. 

  • To lie on the bottom of; to underlie, to lie beneath. 

  • To reach the bottom of something. 

  • To fall to the lowest point. 

  • To be the submissive partner in a BDSM relationship. 

  • To reach or strike against the bottom of something, so as to impede free action. 

  • To furnish (something) with a bottom. 

  • To be anally penetrated in gay sex. 

adj
  • Relating to the genitals. 

  • The lowest or last place or position. 

life raft

noun
  • A usually inflatable raft carried aboard a ship or airplane, used to save lives in case the vessel has to be abandoned in an emergency on the sea. 

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