electricity

Compared meaning: the energy that runs electrical devices (noun).

比较义项：使电器运转的能量／“电”这种能量形式（名词）。

• power

  General, everyday word for the energy supply that runs things; often used loosely for electricity but can also mean other energy sources (solar power, horsepower); typical in fixed phrases like “power outage” or “power lines.”

  笼统、口语化地指驱动物品运转的能量供应；常被随意用作 electricity 的同义词，但也可以指其他能源（如太阳能 solar power、马力 horsepower）；常见于“power outage”（停电）、“power lines”（电线）等固定搭配。

  Fallen power lines blocked the road for hours after the storm.

  暴风雨过后，倒下的电线堵住了道路好几个小时。

• electricity 本词

  The specific, technical name for this form of energy (electric current); used to name the energy itself, in science, billing, or formal contexts, and in fixed phrases like “static electricity.”

  这种能量形式（电流）的专业名称；用于指称这种能量本身，多见于科学、账单等正式语境，也用于“static electricity”（静电）这类固定搭配。

  Rubbing a balloon on your hair creates static electricity.

  用气球摩擦头发会产生静电。

Power and electricity both mean the energy that runs electrical things, and are often used the same way. Power is more general and casual, and can mean other energy types, like solar power. Electricity is the technical, formal name. Power's other meanings are not compared.

这两个词在“供电、电力”这个意义上很接近，日常口语中常可互换（比如“停电”既可以说 lost power，也可以说 lost electricity）。不过 power 是更笼统、口语化的说法，也能指其他能源（如太阳能 solar power、马力 horsepower），并常见于“power outage”“power lines”这类固定搭配；electricity 则是这种能量形式的专业名称，多用于科学、账单等正式语境，以及“static electricity”这类固定搭配。这里不比较 power 的其他义项，如“政治权力”“力量”“数学中的乘方”等。