toffee apple vs caramel apple

toffee apple and caramel apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
toffee apple	Yes	No	No	No
caramel apple	Yes	No	No	No

As nouns, toffee apple and caramel apple are synonyms defined as:

toffee apple and caramel apple: an apple that is covered with a candy-like substance (usually caramelized sugar)

Other synonyms of toffee apple include candied apple, candy apple, taffy apple.

toffee apple (noun)	caramel apple (noun)
an apple that is covered with a candy-like substance (usually caramelized sugar)	an apple that is covered with a candy-like substance (usually caramelized sugar)