flannel cake vs flannel-cake

flannel cake and flannel-cake both are nouns.

Word	Noun	Adjective	Verb	Adverb
flannel cake	Yes	No	No	No
flannel-cake	Yes	No	No	No

As nouns, flannel cake and flannel-cake are synonyms defined as:

flannel cake and flannel-cake: a flat cake of thin batter fried on both sides on a griddle

Other synonyms of flannel cake include battercake, flapcake, flapjack, griddlecake, hot cake, hotcake, pancake.

flannel cake (noun)	flannel-cake (noun)
a flat cake of thin batter fried on both sides on a griddle	a flat cake of thin batter fried on both sides on a griddle