Body and substance with

primarily means “body” or “the shape or structure of something”. It is an important character used not only to refer to the physical body but also to the essence or structure of things, and even to the idea of acquiring or mastering something.

Etymology

This kanji is built from 亻 (person) and 本 (root, base, origin). These invoke imagery of the person together with the base or central structure that supports them, bringing attention to the body’s main frame and essential substance.

Bodies

(Dead body)

死体(したい) refers to the body of a human or animal whose vital functions have ceased. It is a term that objectively and literally describes a medical or biological state.

It combines 死 (dead) with 体 (body) to show a dead body.

Manga panel from 名探偵コナン showing example of Furthermore, this room is too warm with さらに〜.
名探偵コナン » Volume 1 » Page 139

Upon walking in on a murder scene, Conan goes right to work making observations about the blood-covered body and its surroundings. He notes how the room is torn apart save for one upright chair beside the deceased.

コナン:
「さらに、(あつ)すぎるこの部屋(へや)…」
“Furthermore, this room is too warm...”
死亡推定時刻(しぼうすいていじこく)をくるわせるためなのか…」
“Is it to confuse the estimated time of death...?”
「いや、まてよ… それなら死体(したい)(みず)につけた(ほう)が…」
“No, wait... If that's the case, it would be better to put the corpse in water...”
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(Physical education)

体育(たいいく) refers to educational activities that promote healthy physical development through appropriate physical activity and cultivate physical abilities and attitudes conducive to a healthy lifestyle.

It combines 体 (body) with 育 (raise/develop) to show the cultivation of the body.

Manga panel from ホリミヤ showing example of I'd totally die in the heat with 〜じゃう.
ホリミヤ » Volume 1 » Page 45

On a summer day, Hori and her friends in class can’t ignore the heat.

由紀(ゆき):
(そと)(あつ)さってなんなの…? クーラーないと()んじゃうって…っ」
“What's with this heat outside...? I'd totally die without the AC...”
「この日差(ひざ)しのなか体育(たいいく)とか絶対(ぜったい)無理(むり)だわ…」
“There's no way I can do PE in this blazing sun...”
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(Celestial body)

天体(てんたい) is a general term for stars and other matter found in outer space. This includes not only the Sun, Moon, planets, stars, and comets located outside Earth’s atmosphere, but also galaxies and nebulae.

It combines 天 (heaven) with 体 (body) to show a body in the heavens.

Manga panel from 怪盗セイント・テール showing example of A comet-viewing telescope with 望遠鏡.
怪盗セイント・テール » Volume 4 » Page 19

Asuka Jr. receives a challenge notice from Saint Tail, stating her intent to steal Graham Comet on Christmas Eve. One of his friends wonders how Saint Tail will steal a comet. Asuka Jr. thinks it over for a moment.

アスカ Jr.:
「これは 天文台(てんもんだい)天体(てんたい)望遠鏡(ぼうえんきょう)(ぬす)むってことだ!!」
“That means stealing the observatory's telescope!!”
「このへんで彗星(すいせい)()方法(ほうほう)はそれしかないからな!!」
“Since that's the only way to see a comet around here!!”
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(Dismantling)

解体(かいたい) refers to the process of taking apart something that has been assembled or is held together as a single unit. By extension, the term is used in various contexts depending on the subject, such as demolishing a building, abolishing an organization or system, or performing a dissection on a living organism.

It combines (separate) with 体 (body) to show a body being taken apart.

Manga panel from 名探偵コナン showing example of Demolishing the movie theater with 解体.
名探偵コナン » Volume 23 » Page 12

Conan and his friends go to the theater to see a movie. There, they discover this is the last day before the theater closes.

コナン:
「そっか!それで場内(じょうない)にロープとかが()ちてたんだね!」
“Oh, I see! That's why there were ropes and stuff lying around the venue!”
オーナー:
「スマンのう… 業者(ぎょうしゃ)(もの)上映(じょうえい)時間(じかん)キリキリまで解体(かいたい)作業(さぎょう)準備(じゅんび)をしとったから…」
“Sorry about that... The contractor's crew was rushing to get the dismantling ready right up until showtime...”
スタッフ:
「まったく… 明日(あした)まで()ってくれればいいものを…」
“Honestly... They could've at least waited until tomorrow...”
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Conflict and Force

(Physical strength)

体力(たいりょく) refers to the physical abilities that form the foundation of vital functions and physical activity.

It combines 体 (body) with 力 (power) to show the power of the body.

Manga panel from よつばと! showing example of Declining stamina with 低下.
よつばと! » Volume 1 » Page 13

Jumbo helps his friend Yousuke move into his new house. After unboxing things, Yousuke stops for a break.

葉介(ようすけ):
「なんか(おれ) 体力(たいりょく)低下(ていか)してんなあ… ()がふるふる…」
“Man, I feel like my stamina is dropping... My hands are shaking...”
ジャンボ:
「おまえさ 近所(きんじょ)にあいさつで(くば)粗品(そしな)とか用意(ようい)してるか?」
“Hey, are you preparing any little gifts to hand out to your neighbors when you go around saying hello?”
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