poisonous things can cause harm to organisms
venomous_snake_venom_poison is not poisoning. venomous_snake_venom_poison is poisoning. eating is not poisonous_can_cause_death. poisonous_gas is toxic_substance. poisoning is harmed. eating is poisonous_can_cause_death. poisonous_gas is not toxic_substance. poisonous_gas is chemically_harmful_substance. poisonous_gas is not chemically_harmful_substance. poisoning is not harmed.