verb, adjective, directional, noun, idiom, place name · identical, alike, or similar in character or quality

我们有相同的兴趣爱好。

adverb · at the same time or in company with others

他们几个人同去北京旅游。

preposition, verb · indicating accompaniment or the person involved in an action

我同他谈了很久。

noun · used in 胡同 hú​tòng (lane or alleyway)

北京有许多著名的胡同。

noun · used in 胡同 hú​tòng

为了赶时间，我抄近路钻进了窄窄的胡同里。