vicious vs poisonous

vicious and poisonous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
vicious	No	Yes	No	No
poisonous	No	Yes	No	No

As adjectives, vicious and poisonous are synonyms defined as:

Other synonyms of vicious include venomous.

vicious (adjective)	poisonous (adjective)
(of persons or their actions) able or disposed to inflict pain or suffering	not safe to eat
marked by deep ill will; deliberately harmful	marked by deep ill will; deliberately harmful
having the nature of vice	having the qualities or effects of a poison
bringing or deserving severe rebuke or censure