The definition of thoracic is "of or relating to the thorax." There is no noun form of "thoracic" as the word is naturally an adjective, but the thorax is what the word is referrencing.
The spinal nerves that originate from the thoracic portion of the spinal cord don't form plexuses. The word thoracic pertains to the thorax.
The word 'noun' is not a verb. The word 'noun' is a noun, a word for a thing.
The noun form of the word "polite" is "politeness".
The word 'brutal' is the adjective form for the noun brute.The noun form for the adjective brutal is brutality.
The word 'daily' is a noun form as a word for a newspaper that is published every day.The word 'daily' is the adjective and adverb form of the noun day.
The word 'real' is a noun form as a word for the monetary unit of BrazilThe noun form of the adjective 'real' is realness.A related noun form is reality.
The word 'lovely' is the adjective form of the noun love.The noun form for the adjective 'lovely' is loveliness.The word 'lovely' is an obsolete noun form as a word for a beautiful woman or a beautiful object.
The word 'partly' is the adverb form of the noun part.
The noun form for the adjective hilarious is hilariousness. A related noun form is hilarity.
The word 'inferior' is a noun form as a word for someone of lower rank or status; a word for a person. The noun form of the adjective inferior is inferiority.
picture is the noun form
The noun form is beneficence.