obedience plant vs arrowroot

obedience plant and arrowroot both are nouns.

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

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

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

Other synonyms of obedience plant include American arrowroot, Maranta arundinaceae.

obedience plant (noun)	arrowroot (noun)
white-flowered West Indian plant whose root yields arrowroot starch	white-flowered West Indian plant whose root yields arrowroot starch
	canna grown especially for its edible rootstock from which arrowroot starch is obtained
	a nutritive starch obtained from the root of the arrowroot plant