wharfage vs fee

wharfage and fee both are nouns.

Word	Noun	Adjective	Verb	Adverb
wharfage	Yes	No	No	No
fee	Yes	No	Yes	No

As nouns, fee is a hypernym of wharfage; that is, fee is a word with a broader meaning than wharfage:

wharfage (noun)	fee (noun)
a platform built out from the shore into the water and supported by piles; provides access to ships and boats	a fixed charge for a privilege or for professional services
a fee charged for the use of a wharf or quay	an interest in land capable of being inherited

wharfage (verb)	fee (verb)
	give a tip or gratuity to in return for a service, beyond the compensation agreed on