evening dress vs mess kit

evening dress

noun
  • formal attire worn for evening social events. 

  • An elegant dress worn by women, especially for social events in the evening, an evening gown. 

mess kit

noun
  • A formal uniform, worn for occasions such as mess dinners. 

  • A compact set of eating utensils (including plate, cup, utensils) and sometimes cooking pots etc, used in the field by soldiers and by campers. 

How often have the words evening dress and mess kit occurred in a corpus of books? (source: Google Ngram Viewer )