drydock vs dock

drydock and dock both are nouns.

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

As nouns, dock is a hypernym of drydock; that is, dock is a word with a broader meaning than drydock:

drydock: a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline
dock: landing in a harbor next to a pier where ships are loaded and unloaded or repaired; may have gates to let water in or out

Other hypernyms of drydock include dockage, docking facility.

As verbs, dock is a hypernym of drydock; that is, dock is a word with a broader meaning than drydock:

drydock (noun)	dock (noun)
a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline	the solid bony part of the tail of an animal as distinguished from the hair
	a short or shortened tail of certain animals
	landing in a harbor next to a pier where ships are loaded and unloaded or repaired; may have gates to let water in or out
	a platform built out from the shore into the water and supported by piles; provides access to ships and boats
	an enclosure in a court of law where the defendant sits during the trial
	a platform where trucks or trains can be loaded or unloaded
	any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine

drydock (verb)	dock (verb)
maneuver (a ship) into a drydock	maneuver into a dock
	remove or shorten the tail of an animal
	come into dock
	deduct from someone's wages
	deprive someone of benefits, as a penalty