phytotoxin vs plant toxin

phytotoxin and plant toxin both are nouns.

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

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

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

phytotoxin (noun)	plant toxin (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