Poison and toxicity with

The kanji means poison or something harmful in a concentrated way. It also covers figurative harm such as cruel words or corrosive influence.

Toxic Effects

(Poisoning)

中毒(ちゅうどく) means poisoning, intoxication, or addiction to a substance or activity.

It combines 中 (inside) with 毒 (poison) to show poison taking effect within.

Manga panel from ご注文はうさぎですか? showing example of Receiving a treating as with 〜れる.
ご注文はうさぎですか? » Volume 1 » Page 5

Cocoa wonders why it is that she didn’t like coffee before, but she’s crazy about the coffee Chino makes.

チノ:
「でもココアさんは(あじ)(ちが)いわからないじゃないですか」
“But you don't know the difference in taste, right?”
「ただのカフェイン中毒(ちゅうどく)ですよ」
“That makes it just a caffine addiction.”
ココア:
中毒(ちゅうどく)(あつか)いされた…」
“I got treated like an addict...”
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Toxic Substances

(Poison)

(どく) means poison. It also describes anything harmful, including a corrupting influence or malicious words.

Manga panel from 名探偵コナン showing example of A poison's composition with 成分.
名探偵コナン » Volume 14 » Page 15

A client tells Detective Mouri about the condition in which she found her deceased husband. Hearing the details, Conan identifies the likely poison, including the composition, the dosage required to kill, and the internal effects it has on a person. When Ran asks how he knows all this, Conan covers by saying the monster villain on the kid’s TV show he watched explained it.

(らん):
随分(ずいぶん) 丁寧(ていねい)怪人(かいじん)ね… (どく)成分(せいぶん)まで(おし)えてくれるなんて…」
“What a polite villain... Going so far as to tell the poison's composition...”
コナン:
「そんな怪人(かいじん)いねーよ…」
“No such monster exists...”
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(Poisonous substance)

毒物(どくぶつ) means a poisonous substance that can damage health or cause death.

It combines 毒 (poison) with (thing) to show a poisonous thing.

Manga panel from 名探偵コナン showing example of Determining the cause of death with 解剖.
名探偵コナン » Volume 16 » Page 25

Inspector Megure suggests the murder suspect committed suicide by drowning himself. The medical examiner disagrees.

監察医(かんさつい):
「ですが死因(しいん)溺死(できし)ではありません…」
“However, drowning wasn't the cause of death...”
目暮(めぐれ):
「え?」
“What?”
監察医(かんさつい):
解剖(かいぼう)してみないと断定(だんてい)できませんが… おそらく毒物(どくぶつ)()んだあと(いけ)(はい)ったものと…」
“I can't say for certain without an autopsy... but it's likely he took poison and then entered the pond...”
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