lavatory vs loo

lavatory

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

  • Handwashing as an act, particularly 

  • A laver: a washbasin. 

  • 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 piscina: the basin used for washing communion vessels. 

  • 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 

loo

noun
  • A toilet: a fixture used for urination and defecation. 

  • An act that prompts such a penalty. 

  • A hot dust-bearing wind found in Bihar, Uttar Pradesh and the Punjab. 

  • Any group of people. 

  • A lavatory: a room used for urination and defecation. 

  • The penalty paid to the pool in lanterloo for breaking certain rules or failing to take a trick. 

  • A lieutenant. 

  • A game of lanterloo. 

intj
  • A cry to urge on hunting dogs. 

verb
  • To urge on with cries of loo or (figuratively) by other shouting or outcry. 

  • To pay a penalty to the pool for breaking certain rules or failing to take a trick in lanterloo. 

  • To beat in the card game lanterloo. 

  • To pay any penalty to any community. 

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