candied apple vs confection

candied apple and confection both are nouns.

Word	Noun	Adjective	Verb	Adverb
candied apple	Yes	No	No	No
confection	Yes	No	Yes	No

As nouns, confection is a hypernym of candied apple; that is, confection is a word with a broader meaning than candied apple:

candied apple: an apple that is covered with a candy-like substance (usually caramelized sugar)
confection: a food rich in sugar

Other hypernyms of candied apple include sweet.

candied apple (noun)	confection (noun)
an apple that is covered with a candy-like substance (usually caramelized sugar)	the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components
	a food rich in sugar

candied apple (verb)	confection (verb)
	make into a confection