photograph

Compared meaning: a photo taken with a camera (noun).

比较义项：照片（名词）。

• picture

  The most casual, general everyday word for a photo; common in informal, family or spoken contexts, without emphasizing that it was taken with a camera.

  最随意、最通俗的日常用词，常用于非正式、家庭或口语场合，不强调是用相机拍摄的。

  Could you take a picture of me and my sister by the fountain?

  你能在喷泉旁给我和我妹妹拍张照片吗？

• photo

  The standard, neutral word for a camera-made image; the most common choice in everyday speech and writing, including online contexts like social media.

  指用相机拍摄的图像的标准中性用词，是日常口语和书面语中最常用的说法，也常用于社交媒体等网络语境。

  She posted a photo of her new puppy on social media this morning.

  她今天早上在社交媒体上发布了一张她新养小狗的照片。

• photograph 本词

  The fuller, more formal word; typical of written, artistic, or professional contexts, and often used for printed, old, or carefully composed images.

  更完整、更正式的说法，常见于书面语、艺术或专业场合，也常用来指印制的、年代久远或精心拍摄构图的照片。

  The gallery displayed a black-and-white photograph taken in the 1950s.

  画廊展出了一张拍摄于20世纪50年代的黑白照片。

• pic

  A very informal, clipped slang form used mainly in texting, messaging, and casual spoken English; too casual for formal writing.

  非常口语化、简略的俚语说法，主要用于发短信、即时消息和随意口语，正式书面场合中显得过于随便。

  Send me a pic when you get to the airport so I know you arrived.

  你到机场后给我发张照片，让我知道你到了。

Picture, photo, photograph, and pic all mean a camera image. Picture is casual and everyday. Photo is standard and common. Photograph is more formal, used in writing. Pic is informal slang, used in texting. Picture's other senses and photograph as a verb are not compared.

这几个词都可以指“照片”，但正式程度和使用场合不同：picture最通俗随意，photo是最常见的中性说法，photograph更正式、书面化，pic则是短信、社交媒体等场合的非正式简称。这里不比较picture表示“图画”或“电影”等其他意义，也不比较photograph作动词“拍照”的用法。