waterfront vs dockyard

waterfront and dockyard both are nouns.

Word	Noun	Adjective	Verb	Adverb
waterfront	Yes	No	No	No
dockyard	Yes	No	No	No

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

waterfront: the area of a city (such as a harbor or dockyard) alongside a body of water
dockyard: an establishment on the waterfront where vessels are built or fitted out or repaired

Other hyponyms of waterfront include seafront.

waterfront (noun)	dockyard (noun)
the area of a city (such as a harbor or dockyard) alongside a body of water	an establishment on the waterfront where vessels are built or fitted out or repaired