暖

暖

Warm.

'暖' is used as an adjective describing the temperature of the room, conveying a sense of warmth and comfort.

房间里很暖，大家都感觉很舒服。

The room is warm, and everyone feels very comfortable.

'暖和' is derived from '暖' and is used to describe the property of the clothing providing warmth.

她给我寄了一件很暖和的毛衣。

She sent me a very warm sweater.

'暖气' combines '暖' (warm) and '气' (air), referring to the heating system that provides warmth in the colder months.

冬天里，我们需要暖气来保持温暖。

In winter, we need heating to stay warm.