asparagus bean vs yard-long bean

asparagus bean and yard-long bean both are nouns.

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

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

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

Other synonyms of asparagus bean include Vigna sesquipedalis, Vigna unguiculata sesquipedalis.

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