Prostigmin vs neostigmine

Prostigmin and neostigmine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prostigmin	Yes	No	No	No
neostigmine	Yes	No	No	No

As nouns, Prostigmin and neostigmine are synonyms defined as:

Prostigmin and neostigmine: a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis

Prostigmin (noun)	neostigmine (noun)
a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis	a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis