1. Denotes a mingling or intermixing with distinct or separable objects.

- How can you speak with authority about their customs when you have never lived among them?

2. Denotes a belonging of a person or a thing to a group.

- He is among the few who completely understand the subject.

3. Denotes a sharing of a common feature in a group.

- Lactose intolerance is common among people of Asian heritage.