graving dock vs drydock

graving dock and drydock both are nouns.

Word	Noun	Adjective	Verb	Adverb
graving dock	Yes	No	No	No
drydock	Yes	No	Yes	No

As nouns, graving dock and drydock are synonyms defined as:

graving dock and drydock: a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline

Other synonyms of graving dock include dry dock.

graving dock (noun)	drydock (noun)
a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline	a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline

graving dock (verb)	drydock (verb)
	maneuver (a ship) into a drydock