beet vs Beta vulgaris

beet and Beta vulgaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
beet	Yes	No	No	No
Beta vulgaris	Yes	No	No	No

As nouns, beet and Beta vulgaris are synonyms defined as:

beet and Beta vulgaris: biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop

Other synonyms of beet include common beet.

beet (noun)	Beta vulgaris (noun)
round red root vegetable	biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop
biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop