horse radish vs Armoracia rusticana

horse radish and Armoracia rusticana both are nouns.

Word	Noun	Adjective	Verb	Adverb
horse radish	Yes	No	No	No
Armoracia rusticana	Yes	No	No	No

As nouns, horse radish and Armoracia rusticana are synonyms defined as:

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

Other synonyms of horse radish include horseradish, red cole.

horse radish (noun)	Armoracia rusticana (noun)
coarse Eurasian plant cultivated for its thick white pungent root	coarse Eurasian plant cultivated for its thick white pungent root