bunfight vs bun-fight

bunfight and bun-fight both are nouns.

Word	Noun	Adjective	Verb	Adverb
bunfight	Yes	No	No	No
bun-fight	Yes	No	No	No

As nouns, bunfight and bun-fight are synonyms defined as:

bunfight and bun-fight: (Briticism) a grand formal party on an important occasion

bunfight (noun)	bun-fight (noun)
(Briticism) a grand formal party on an important occasion	(Briticism) a grand formal party on an important occasion