curare vs phytotoxin

curare and phytotoxin both are nouns.

Word	Noun	Adjective	Verb	Adverb
curare	Yes	No	No	No
phytotoxin	Yes	No	No	No

As nouns, phytotoxin is a hypernym of curare; that is, phytotoxin is a word with a broader meaning than curare:

curare: a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles
phytotoxin: any substance produced by plants that is similar in its properties to extracellular bacterial toxin

Other hypernyms of curare include alkaloid, neuromuscular blocking agent, plant toxin.

curare (noun)	phytotoxin (noun)
a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles	any substance produced by plants that is similar in its properties to extracellular bacterial toxin