• 命令めいれい — command / order
• 司令しれい — commander
• 法令ほうれい — laws and ordinances
• 令和れいわ — Reiwa era
• 令嬢れいじょう — (honorific) daughter
• 令息れいそく — (honorific) son

令 combines a person element with a phonetic/semantic component suggesting “to make obey” or “to cause to follow,” yielding senses like order, command, and decree. It also developed respectful uses meaning “honorable,” as in 令嬢 and 令息, and appears in the era name 令和.

命令めいれいに 従したがうべきです。
You should follow the command.

令和れいわは 新あたらしい時代じだいです。
Reiwa is a new era.

令嬢れいじょうに よろしくお伝つたえください。
Please give my regards to your daughter.