sweet corn vs green corn

sweet corn and green corn both are nouns.

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

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

sweet corn and green corn: corn that can be eaten as a vegetable while still young and soft

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

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

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

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