sledge vs sled

sledge and sled both are nouns.

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

As nouns, sledge and sled are synonyms defined as:

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

Other synonyms of sledge include sleigh.

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

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