sugar corn vs sweet corn

sugar corn and sweet corn both are nouns.

Word	Noun	Adjective	Verb	Adverb
sugar corn	Yes	No	No	No
sweet corn	Yes	No	No	No

As nouns, sugar corn and sweet corn are synonyms defined as:

sugar corn and sweet corn: a corn plant developed in order to have young ears that are sweet and suitable for eating

Other synonyms of sugar corn include green corn, sweet corn plant, Zea mays rugosa, Zea saccharata.

sugar corn (noun)	sweet corn (noun)
a corn plant developed in order to have young ears that are sweet and suitable for eating	corn that can be eaten as a vegetable while still young and soft
	a corn plant developed in order to have young ears that are sweet and suitable for eating