sweet corn plant vs sugar corn

sweet corn plant and sugar corn both are nouns.

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

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

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

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

sweet corn plant (noun)	sugar corn (noun)
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