infancy vs swaddling

infancy

noun
  • The state of being an infant. 

  • An early stage in the development of anything. 

  • The state of being a minor. 

  • The earliest period of childhood (crawling rather than walking). 

swaddling

noun
  • The practice of wrapping infants in clothing that restricts movement. 

  • Clothing of this kind. 

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