sledge vs dogsled

sledge and dogsled both are nouns.

Word	Noun	Adjective	Verb	Adverb
sledge	Yes	No	Yes	No
dogsled	Yes	No	Yes	No

As nouns, dogsled is a hyponym of sledge; that is, dogsled is a word with a more specific, narrower meaning than sledge:

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

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

sledge (noun)	dogsled (noun)
a heavy long-handled hammer used to drive stakes or wedges	a sled pulled by dogs
a vehicle mounted on runners and pulled by horses or dogs; for transportation over snow

sledge (verb)	dogsled (verb)
beat with a sledgehammer	travel with a dogsled
transport in a sleigh
ride in or travel with a sledge