plant toxin vs phytotoxin

plant toxin and phytotoxin both are nouns.

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

As nouns, plant toxin and phytotoxin are synonyms defined as:

plant toxin and phytotoxin: any substance produced by plants that is similar in its properties to extracellular bacterial toxin

plant toxin (noun)	phytotoxin (noun)
any substance produced by plants that is similar in its properties to extracellular bacterial toxin	any substance produced by plants that is similar in its properties to extracellular bacterial toxin