yard-long bean vs asparagus bean

yard-long bean and asparagus bean both are nouns.

Word	Noun	Adjective	Verb	Adverb
yard-long bean	Yes	No	No	No
asparagus bean	Yes	No	No	No

As nouns, yard-long bean and asparagus bean are synonyms defined as:

yard-long bean and asparagus bean: South American bean having very long succulent pods

Other synonyms of yard-long bean include Vigna sesquipedalis, Vigna unguiculata sesquipedalis.

yard-long bean (noun)	asparagus bean (noun)
South American bean having very long succulent pods	South American bean having very long succulent pods