sled vs sleigh

sled

verb
  • To ride a sled. 

  • To convey on a sled. 

noun
  • A vehicle on runners, used for conveying loads over the snow or ice. (contrast "sleigh", which is larger) 

  • A small, light vehicle with runners, used recreationally, mostly by children, for sliding down snow-covered hills. (A "sled" in this sense is not pulled by an animal as a "sleigh" is.) 

  • A snowmobile. 

sleigh

verb
  • To ride or drive a sleigh. 

noun
  • A vehicle, generally pulled by an animal, which moves over snow or ice on runners, used for transporting persons or goods. (contrast "sled", which is smaller) 

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