Sending and escorting with

means “to move a person or object to another place”, “to see off”, or “to send”.

Etymology

This kanji is a phono-semantic compound comprised of 辶 (movement radical, “to walk”) and 关 (phonetic component). The movement radical invokes imagery of traveling or going, while the phonetic component provides the sound (ソウ).

The meanings of sending and escorting are clear from this imagery of movement and travel. From these core meanings, the kanji extends to include transmitting (sending information), dispatching (sending goods), broadcasting (sending signals), and seeing off (escorting someone on departure).

Broadcasting and Transmission

(Broadcast)

放送(ほうそう) means broadcasting audio or video to a public audience by television, radio, or the internet.

It combines (send out) with 送 (send) to show content being sent outward to the public.

Manga panel from からかい上手の高木さん showing example of Broadcasting music at school with 放送.
からかい上手の高木さん » Volume 19 » Page 88

Nishika and Takagi’s class discusses what committees they plan to join.

生徒(せいと):
(つぎ)時間(じかん)委員会(いいんかい)()めだよねー。」
“Next up is deciding the committee schedule, right?”
生徒(せいと):
(わたし) (なに)にしよー」
“What should I pick?”
生徒(せいと):
(わたし) 放送(ほうそう)委員(いいん)()きな音楽(おんがく)(なが)したいー。」
“I want to play my favorite music as a member of the broadcasting committee.”
View Full Example

(Transmission)

送信(そうしん) means sending data, a message, or a signal to another location.

It combines 送 (send) with 信 (message) to show sending a message or communication.

Manga panel from ひらやすみ showing example of Sending a text message with 送信.
ひらやすみ » Volume 1 » Page 63

Hiroto is having dinner with his friend Hideki. After Hideki reveals that his wife is going to have a baby, he looks down at his phone and sees a text message he needs to respond to.

ヒデキ:
「ホイ 送信(そうしん)。」
“And...sent.”
ヒロト:
「スゴイなぁ ヒデキ。」
“You're amazing, Hideki.”
View Full Example

Escorting and Transfer

(Picking up and dropping off)

送迎(そうげい) means taking someone to a destination and picking them up, usually by car.

It combines 送 (send (off)) with 迎 (welcome) to show both seeing someone off and going to meet them.

Manga panel from アオのハコ showing example of Bus pickup and drop off with 送迎.
アオのハコ » Volume 10 » Page 182

After school, the girls’ basketball team walks to the location where they’re practicing for an upcoming match.

生徒:
「せめてバズで送迎(そうげい)してくれれば…」
“If only they'd at least provide a bus to pick us up and drop us off”
生徒:
徒歩(とほ)圏内(けんない)だからねぇ」
“It's within walking distance, after all.”
View Full Example

Transport and Delivery

(Transport)

輸送(ゆそう) means transporting people or goods by road, rail, sea, or air.

It combines 輸 (transport) with 送 (send) to show transporting and sending goods or people in organized fashion.

Manga panel from ARIA The MASTERPIECE showing example of Transporting delicate glassware with 輸送.
ARIA The MASTERPIECE » Volume 4 » Page 221

Akari receives her first commission as an Undine gondolier, but rather than taking someone sightseeing, it’s for transporting glassware.

灯里(あかり):
「デリケートな商品(しょうひん)だから輸送(ゆそう)はのんびりした(ゴンドラ)最適(さいてき)だって…」
“Since it's a delicate item, a slow-moving gondola is the best for transport...”
View Full Example

(Mailing)

郵送(ゆうそう) means sending a letter, document, or package by post.

It combines 郵 (post) with 送 (send) to show sending by mail.

Manga panel from ひとりぼっちの○○生活 showing example of Receiving exam results by mail with 郵送.
ひとりぼっちの○○生活 » Volume 8 » Page 55

Bocchi’s mother confirms with Bocchi that her exam results will be available online.

ぼっち:
「お(かあ)さん合格(ごうかく)発表(はっぴょう)経験(けいけん)した?」
“Mom, have you ever been through the experience of waiting for exam results?”
(かあ)さん:
「もちろん したわよ」
“Of course!”
「お(かあ)さんの(とき)郵送(ゆうそう)だったわよ」
“Back in my day, it was sent by mail.”
View Full Example