double date vs gala

double date

noun
  • A (romantic) date that two couples go on together. 

verb
  • To go on a double date. 

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 double date and gala occurred in a corpus of books? (source: Google Ngram Viewer )