American rattlebox vs Crotalaria sagitallis

American rattlebox and Crotalaria sagitallis both are nouns.

Word	Noun	Adjective	Verb	Adverb
American rattlebox	Yes	No	No	No
Crotalaria sagitallis	Yes	No	No	No

As nouns, American rattlebox and Crotalaria sagitallis are synonyms defined as:

American rattlebox and Crotalaria sagitallis: tropical American annual herb having an inflated pod in which the ripe seeds rattle

American rattlebox (noun)	Crotalaria sagitallis (noun)
tropical American annual herb having an inflated pod in which the ripe seeds rattle	tropical American annual herb having an inflated pod in which the ripe seeds rattle