Japanese with Manga

Causes and dependence with 因

means “the basis for something to come into being” or “a foundation”.

Etymology

This kanji is an pictographic character comprised of 囗 as an enclosure and 大 as a person, such as a person lying on a mat.

Causes

原因 (Cause)

原因(げんいん) refers to the underlying factor or reason that leads to a particular result or state. It is primarily used to explain “why” negative events such as problems, accidents, or failures occurred.

It combines 原 (origin) with 因 (cause) to show the originating cause.

Manga panel from カードキャプターさくら showing example of Causes and dependence with 因.
カードキャプターさくら » Volume 1 » Page 112

After cheerleading practice, Sakura overhears her friends talking about incidents at the school pool, where Sakura and Chiharu were among those mysteriously pulled underwater.

千春(ちはる):
「きょう また プールで(あし) ()っぱられておぼれそうになったんだって」
“I heard that today, someone got dragged under the water at the pool and almost drowned again.”
奈緒子(なおこ):
「こわいねーーー」
“That's scary!”
千春(ちはる):
先生(せんせい)原因(げんいん)がわからないならプール閉鎖(へいさ)するしかないっていってたよ」
“The teacher said that if they can't figure out the cause, they'll have no choice but to close the pool.”
Literal: “The teacher said that if the cause isn't known, there's no choice but to close the pool.”
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死因 (Cause of death)

死因(しいん) means the cause of death. It is used in medical, legal, and investigative contexts.

It combines 死 (death) with 因 (cause) to show the cause behind a death.

Manga panel from 名探偵コナン showing example of Causes and dependence with 因.
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...”
Literal: “I can't determine it unless we try an autopsy... but perhaps he entered the pond after drinking poison...”
View Full Example