caramel apple vs taffy apple

caramel apple and taffy apple both are nouns.

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

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

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

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

caramel apple (noun)	taffy 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)