evening dress vs outfit

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. 

outfit

noun
  • A set of clothing (with accessories). 

  • Any cohesive group of people; a unit; such as a military company. 

  • A fiscal year of the Hudson's Bay Company, or the supplies required for such a period. 

  • An outlier-sensitive fit. 

  • Gear consisting of a set of articles or tools for a specified purpose. 

  • A sports team. 

  • A business or firm. 

verb
  • To provide with, usually for a specific purpose. 

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