hot cake vs hotcake

hot cake and hotcake both are nouns.

Word	Noun	Adjective	Verb	Adverb
hot cake	Yes	No	No	No
hotcake	Yes	No	No	No

As nouns, hot cake and hotcake are synonyms defined as:

hot cake and hotcake: a flat cake of thin batter fried on both sides on a griddle

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

hot cake (noun)	hotcake (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