facilities vs latrine

facilities

noun
  • Facilities for urination and defecation: a toilet; a lavatory. 

  • Synonym of facility in certain contexts. 

latrine

noun
  • Any facility or device used for urination or defecation, whether toilet, lavatory, or outhouse. 

  • An open trench or pit used for urination and defecation. 

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