brussels sprout vs Brassica oleracea gemmifera

brussels sprout and Brassica oleracea gemmifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
brussels sprout	Yes	No	No	No
Brassica oleracea gemmifera	Yes	No	No	No

As nouns, brussels sprout and Brassica oleracea gemmifera are synonyms defined as:

brussels sprout and Brassica oleracea gemmifera: plant grown for its stout stalks of edible small green heads resembling diminutive cabbages

brussels sprout (noun)	Brassica oleracea gemmifera (noun)
plant grown for its stout stalks of edible small green heads resembling diminutive cabbages	plant grown for its stout stalks of edible small green heads resembling diminutive cabbages