downer vs sleeper

downer

noun
  • A drug that has depressant qualities. 

  • A livestock animal that has collapsed. 

  • A negative drug trip. 

  • A form of industrial action in which workers down tools and refuse to work. 

  • Something or someone disagreeable, dispiriting or depressing; a killjoy. 

sleeper

noun
  • A sedative. 

  • A railroad tie. 

  • A goby-like bottom-feeding freshwater fish of the family Odontobutidae. 

  • A type of pajama for a person, especially a child, that covers the whole body, including the feet. 

  • A sleeper hold. 

  • A heavy floor timber in a ship's bottom. 

  • A nurse shark (family Ginglymostomatidae). 

  • That which lies dormant, as a law. 

  • A bet placed on the gambling table and then forgotten about by the gambler. 

  • An automobile which has been internally modified to excess, while retaining a mostly stock appearance in order to fool opponents in a drag race, or to avoid the attention of the police. 

  • A small starter earring, worn to prevent a piercing from closing. 

  • Someone who sleeps. 

  • Something that achieves unexpected success after an interval of time. 

  • A structural beam in a floor running perpendicular to both the joists beneath and floorboards above. 

  • A spy, saboteur, or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell. 

  • A railway sleeping car. 

  • The lowest, or bottom, tier of casks. 

verb
  • To mark a calf by cutting its ear. 

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