costume vs overalls

costume

noun
  • A set of clothes appropriate for a particular occasion or season. 

  • A style of dress, including garments, accessories and hairstyle, especially as characteristic of a particular country, period or people. 

  • An outfit or a disguise worn as fancy dress etc. 

verb
  • To dress or adorn with a costume or appropriate garb. 

overalls

noun
  • A loose-fitting garment worn over regular clothes to protect them. 

  • Trousers traditionally worn by cavalry. 

  • Loose-fitting pants with supporting cross-straps and a panel of material in the chest (called a bib), often associated with farm work. 

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