sled vs dog sleigh

sled and dog sleigh both are nouns.

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

As nouns, dog sleigh is a hyponym of sled; that is, dog sleigh is a word with a more specific, narrower meaning than sled:

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

Other hyponyms of sled include bob, bobsled, bobsleigh, bobsled, bobsleigh, dog sled, dogsled, luge, pung, toboggan.

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

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