The general terms "high context" and "low context" (popularized by Edward Hall) are used to describe broad-brush cultural differences between societies.
High context refers to societies or groups where people have close connections over a long period of time. Many aspects of cultural behavior are not made explicit because most members know what to do and what to think from years of interaction with each other. Your family is probably an example of a high context environment.
Low context refers to societies where people tend to have many connections but of shorter duration or for some specific reason. In these societies, cultural behavior and beliefs may need to be spelled out explicitly so that those coming into the cultural environment know how to behave.
