dry-dock vs drydock

dry-dock is not a noun while drydock is a noun.

Word	Noun	Adjective	Verb	Adverb
dry-dock	No	No	Yes	No
drydock	Yes	No	Yes	No

As verbs, dry-dock and drydock are synonyms defined as:

dry-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

dry-dock (verb)	drydock (verb)
maneuver (a ship) into a drydock	maneuver (a ship) into a drydock