phytotoxin vs toxin

phytotoxin and toxin both are nouns.

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

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

phytotoxin: any substance produced by plants that is similar in its properties to extracellular bacterial toxin
toxin: a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species

phytotoxin (noun)	toxin (noun)
any substance produced by plants that is similar in its properties to extracellular bacterial toxin	a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species