dressing gown vs swaddling clothes

dressing gown

noun
  • An item of clothing often made from cotton or another absorbent material, in the form of a long open robe with a belt to tie it around the middle and fasten it securely; often worn over pyjamas. 

swaddling clothes

noun
  • A garment, made of strips of cloth, used to bind an infant and restrict movement of its limbs. 

  • An early period in development, infancy, the beginnings of something; inception. 

How often have the words dressing gown and swaddling clothes occurred in a corpus of books? (source: Google Ngram Viewer )