携帯

1. Origins, structure, and basic meaning

• Structure: 携帯 is read as けいたい and is both a verbal noun for carrying something and a noun shortened from 携帯電話, a mobile phone.
• Basic usage: Context distinguishes carrying a flashlight from realizing that a phone was left behind.

2. Common pitfalls and similar expressions

• Carrying action
  • In 懐中電灯を携帯する, the carried item is the direct object of the action.
• Mobile-phone noun
  • In 携帯を忘れる, 携帯 is the shortened noun for a mobile phone, not the action “carry.”