dopa vs L-dopa

dopa and L-dopa both are nouns.

Word	Noun	Adjective	Verb	Adverb
dopa	Yes	No	No	No
L-dopa	Yes	No	No	No

As nouns, L-dopa is a hyponym of dopa; that is, L-dopa is a word with a more specific, narrower meaning than dopa:

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

Other hyponyms of dopa include Bendopa, Brocadopa, Larodopa, levodopa.

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