procaine vs Novocain

procaine and Novocain both are nouns.

Word	Noun	Adjective	Verb	Adverb
procaine	Yes	No	No	No
Novocain	Yes	No	No	No

As nouns, Novocain is a hyponym of procaine; that is, Novocain is a word with a more specific, narrower meaning than procaine:

procaine: a white crystalline powder (trade name Ethocaine) administered near nerves as a local anesthetic in dentistry and medicine
Novocain: procaine administered as a hydrochloride (trade name Novocain)

Other hyponyms of procaine include novocaine, procaine hydrochloride.

procaine (noun)	Novocain (noun)
a white crystalline powder (trade name Ethocaine) administered near nerves as a local anesthetic in dentistry and medicine	procaine administered as a hydrochloride (trade name Novocain)