Kingston-upon Hull vs Kingston upon Hull

Kingston-upon Hull and Kingston upon Hull both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kingston-upon Hull	Yes	No	No	No
Kingston upon Hull	Yes	No	No	No

As nouns, Kingston-upon Hull and Kingston upon Hull are synonyms defined as:

Kingston-upon Hull and Kingston upon Hull: a large fishing port in northeastern England

Other synonyms of Kingston-upon Hull include Hull.

Kingston-upon Hull (noun)	Kingston upon Hull (noun)
a large fishing port in northeastern England	a large fishing port in northeastern England