lavatory vs sandbox

lavatory

noun
  • A piscina: the basin used for washing communion vessels. 

  • Handwashing as an act, particularly 

  • A laver: a washbasin. 

  • A plumbing fixture for urination and defecation: a toilet. 

  • A room containing a toilet: a bathroom (US) or WC (UK). 

  • The ritual washing of hands after using the piscina to clean the communion vessels. 

  • A plumbing fixture used for washing: a sink. 

  • A lavabo: the basin used for washing one's hands before handling the Eucharist. 

  • The lavabo: the ritual washing of hands before handling the eucharist. 

  • A baptismal font: the basin used for baptism, used figuratively for the washing away of sins. 

  • A vessel or fixture for washing 

sandbox

noun
  • A container for sand or pounce, used historically before blotting paper. 

  • An animal's litter box. 

  • The Middle East. 

  • A children's play area consisting of a box filled with sand. 

  • A page on a wiki where users are free to experiment without destroying or damaging any legitimate content. 

  • A box carried on locomotives, from which sand runs onto the rails in front of the driving wheels, to prevent slipping. 

  • An isolated area where a program can be executed with a restricted portion of the resources available. 

  • A box filled with sand that is shaped to form a mould for metal casting. 

verb
  • To restrict (a program, etc.) by placing it in a sandbox. 

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