This is the 1467th most frequent Korean word.
충전
"충전" means "charging" (as in recharging a battery or replenishing energy).
Here, '충전' refers to rejuvenating or replenishing one's energy, showing its metaphorical usage.
휴식은 에너지를 충전하는 데 중요한 역할을 해요.
Rest is essential in recharging one's energy.
In this sense, '충전' is metaphorically used to mean acquiring or enhancing one's knowledge or abilities.
새로운 지식을 충전하기 위해 독서를 시작했어요.
I've started reading to recharge with new knowledge.
In this case, '충전' means to recharge a battery, often used in the context of electronic devices.