all-day sucker vs candy

all-day sucker and candy both are nouns.

Word	Noun	Adjective	Verb	Adverb
all-day sucker	Yes	No	No	No
candy	Yes	No	Yes	No

As nouns, candy is a hypernym of all-day sucker; that is, candy is a word with a broader meaning than all-day sucker:

all-day sucker: hard candy on a stick
candy: a rich sweet made of flavored sugar and often combined with fruit or nuts

Other hypernyms of all-day sucker include confect.

all-day sucker (noun)	candy (noun)
hard candy on a stick	a rich sweet made of flavored sugar and often combined with fruit or nuts

all-day sucker (verb)	candy (verb)
	coat with something sweet, such as a hard sugar glaze