unload vs wharf

unload is not a noun while wharf is a noun.

Word	Noun	Adjective	Verb	Adverb
unload	No	No	Yes	No
wharf	Yes	No	Yes	No

As verbs, wharf is a hyponym of unload; that is, wharf is a word with a more specific, narrower meaning than unload:

Other hyponyms of unload include air-drop.

unload (noun)	wharf (noun)
	a platform built out from the shore into the water and supported by piles; provides access to ships and boats

unload (verb)	wharf (verb)
remove the load from (a container or vehicle)	moor at a wharf
remove (cargo, people, etc.) from and leave	discharge at a wharf
	come into or dock at a wharf
	store on a wharf
	provide with a wharf