Armoracia rusticana vs horseradish

Armoracia rusticana and horseradish both are nouns.

Word	Noun	Adjective	Verb	Adverb
Armoracia rusticana	Yes	No	No	No
horseradish	Yes	No	No	No

As nouns, Armoracia rusticana and horseradish are synonyms defined as:

Armoracia rusticana and horseradish: coarse Eurasian plant cultivated for its thick white pungent root

Other synonyms of Armoracia rusticana include horse radish, red cole.

Armoracia rusticana (noun)	horseradish (noun)
coarse Eurasian plant cultivated for its thick white pungent root	grated horseradish root
	coarse Eurasian plant cultivated for its thick white pungent root
	the root of the horseradish plant; it is grated or ground and used for seasoning