appointment

Compared meaning: an arranged meeting at a set time (noun).

比较义项：约会（名词）。

• date

  Informal and social; often implies a romantic outing or simply a set day/time for an event, arranged between friends or a couple.

  较为随意、社交性强；常指浪漫约会，或只是为某个活动定下的日子或时间，安排对象多是朋友或情侣。

  They went on their first date to a small Italian restaurant downtown.

  他们的第一次约会去了市中心一家小意大利餐厅。

• appointment 本词

  Formal and businesslike; typically with a professional (doctor, dentist, hairdresser) at a fixed time, and can be booked, kept, or cancelled.

  正式、公务性强；通常是与专业人士（医生、牙医、理发师等）在固定时间的会面，可以预约、赴约或取消。

  She called to reschedule her appointment with the dermatologist.

  她打电话把和皮肤科医生的预约改期了。

Date and appointment both mean an arranged meeting at a set time, but date is informal and social, often a romantic outing. Appointment is formal and businesslike, with a doctor or professional, and can be booked or cancelled. Other meanings are not compared here.

这两个词都指事先安排好的会面，但语气和场合不同：date 更随意，常带社交或浪漫色彩；appointment 更正式，多指与专业人士或机构按具体时间安排的会面。这里不比较 date 表示“日期”或“枣”的意思，也不比较 appointment 表示“任命、委任”的意思。