| Subject | English | Chinese simplified |
| comp., MS | hierarchical address book | 层次通讯簿 (A feature of Outlook that allows members of an organization to be displayed in a tree view control, grouped by department) |
| comp., MS | hierarchical namespace | 分层命名空间 (A namespace, such as the DNS namespace or Active Directory namespace, that is hierarchically structured and provides rules that allow the namespace to be partitioned) |