dinner dress vs gala

dinner dress

noun
  • A gown worn by Victorian women for dinners and parties held in people's homes. It often had long sleeves, a high neck, or a narrow skirt to set it apart from an evening gown. 

gala

noun
  • A showy and festive party. 

  • A competition 

  • Pomp, show, or festivity. 

  • A member of an androgynous class of priests of the Sumerian goddess Inanna. 

adj
  • Celebratory; festive. 

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