jack bean vs giant stock bean

jack bean and giant stock bean both are nouns.

Word	Noun	Adjective	Verb	Adverb
jack bean	Yes	No	No	No
giant stock bean	Yes	No	No	No

As nouns, jack bean and giant stock bean are synonyms defined as:

jack bean and giant stock bean: annual semi-erect bushy plant of tropical South America bearing long pods with white seeds grown especially for forage

Other synonyms of jack bean include Canavalia ensiformis, wonder bean.

jack bean (noun)	giant stock bean (noun)
annual semi-erect bushy plant of tropical South America bearing long pods with white seeds grown especially for forage	annual semi-erect bushy plant of tropical South America bearing long pods with white seeds grown especially for forage