obedience plant vs American arrowroot

obedience plant and American arrowroot both are nouns.

Word	Noun	Adjective	Verb	Adverb
obedience plant	Yes	No	No	No
American arrowroot	Yes	No	No	No

As nouns, obedience plant and American arrowroot are synonyms defined as:

obedience plant and American arrowroot: white-flowered West Indian plant whose root yields arrowroot starch

Other synonyms of obedience plant include arrowroot, Maranta arundinaceae.

obedience plant (noun)	American arrowroot (noun)
white-flowered West Indian plant whose root yields arrowroot starch	white-flowered West Indian plant whose root yields arrowroot starch