measure word · classifier for sets, series, batteries, or groups of people

这组照片拍得很漂亮。

measure word, noun, particle, punctuation · a team, section, or small group of people working together

我被分配到了第二组。

verb, noun · to form, organize, or constitute a group or entity

我们正在组建一支篮球队。

proper name · Chinese surname Zu

组先生是我们的老师。