Yes, beet is a noun; a singular, common, concrete noun, a word for a vegetable, a thing.
Beet is a noun.
A beet is a common noun.
In this context, it is common.
Beet
Beets is the plural of beet
Here are some sentences.Plant this beet over there.The beet was very sweet.
A beet radish is an archaic term for the common beet, Latin name Beta vulgaris.
The common name for a beet is a red beet or simply a beet.
beet-as in sugar beet
beet
Peter Beet died in 2005.
take a beet from the fridge and draw what you see.