levodopa vs dopa

levodopa and dopa both are nouns.

Word	Noun	Adjective	Verb	Adverb
levodopa	Yes	No	No	No
dopa	Yes	No	No	No

As nouns, dopa is a hypernym of levodopa; that is, dopa is a word with a broader meaning than levodopa:

levodopa: the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease
dopa: amino acid that is formed in the liver and converted into dopamine in the brain

Other hypernyms of levodopa include dihydroxyphenylalanine.

levodopa (noun)	dopa (noun)
the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease	amino acid that is formed in the liver and converted into dopamine in the brain