dog sled vs sleigh

dog sled and sleigh both are nouns.

Word	Noun	Adjective	Verb	Adverb
dog sled	Yes	No	No	No
sleigh	Yes	No	Yes	No

As nouns, sleigh is a hypernym of dog sled; that is, sleigh is a word with a broader meaning than dog sled:

dog sled: a sled pulled by dogs
sleigh: a vehicle mounted on runners and pulled by horses or dogs; for transportation over snow

Other hypernyms of dog sled include sled, sledge.

dog sled (noun)	sleigh (noun)
a sled pulled by dogs	a vehicle mounted on runners and pulled by horses or dogs; for transportation over snow

dog sled (verb)	sleigh (verb)
	ride (on) a sled