ptomain vs amine

ptomain and amine both are nouns.

Word	Noun	Adjective	Verb	Adverb
ptomain	Yes	No	No	No
amine	Yes	No	No	No

As nouns, amine is a hypernym of ptomain; that is, amine is a word with a broader meaning than ptomain:

ptomain: any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria
amine: a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals

Other hypernyms of ptomain include aminoalkane.

ptomain (noun)	amine (noun)
any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria	a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals