flapjack vs hot cake

flapjack and hot cake both are nouns.

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

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

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

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

flapjack (noun)	hot 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