The list of default Contexts for the icon theme are:

Table 1. Standard Contexts

Actions Icons which are generally used in menus and dialogs for interacting with the user. actions
Animations Animated images used to represent loading web sites, or other background processing which may be less suited to more verbose progress reporting in the user itnerface. animations
Applications Icons that describe what an application is, for use in the Programs menu, window decorations, and the task list. These may or may not be generic depending on the application and its purpose. Applications which are to be considered part of the base desktop, such as the calculator or terminal, should use the generic icons specified in this specification, while more advanced applications such as web browsers and office applications should use branded icons which still give the user an idea of what function the application provides. apps
Categories Icons that are used for categories in the Programs menu, or the Control Center, for separating applications, preferences, and settings for display to the user. categories
Devices Icons for hardware that is contained within or connected to the computing device. devices
Emblems Icons for tags and properties of files, that are displayed in the file manager. This context contains emblems for such things as read-only or photos. emblems
Emotes Icons for emotions that are expressed through text chat applications such as :-) or :-P in IRC or instant messengers. emotes
International Icons for international denominations such as flags. intl
MimeTypes Icons for different types of data, such as audio or image files. mimetypes
Places Icons used to represent locations, either on the local filesystem, or through remote connections. Folders, trash, and workgroups are some examples. places
Status Icons for presenting status to the user. This context contains icons for warning and error dialogs, as well as for the current weather, appointment alarms, and battery status. status