Welsh rarebit vs Welsh rabbit

Welsh rarebit and Welsh rabbit both are nouns.

Word	Noun	Adjective	Verb	Adverb
Welsh rarebit	Yes	No	No	No
Welsh rabbit	Yes	No	No	No

As nouns, Welsh rarebit and Welsh rabbit are synonyms defined as:

Welsh rarebit and Welsh rabbit: cheese melted with ale or beer served over toast

Other synonyms of Welsh rarebit include rarebit.

Welsh rarebit (noun)	Welsh rabbit (noun)
cheese melted with ale or beer served over toast	cheese melted with ale or beer served over toast