yard-long bean vs Vigna unguiculata sesquipedalis

yard-long bean and Vigna unguiculata sesquipedalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
yard-long bean	Yes	No	No	No
Vigna unguiculata sesquipedalis	Yes	No	No	No

As nouns, yard-long bean and Vigna unguiculata sesquipedalis are synonyms defined as:

yard-long bean and Vigna unguiculata sesquipedalis: South American bean having very long succulent pods

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

yard-long bean (noun)	Vigna unguiculata sesquipedalis (noun)
South American bean having very long succulent pods	South American bean having very long succulent pods