| superclass | description |
|---|---|
| Action | An action performed by a direct agent and indirect participants upon a direct object. Optionally happens at a location with the help of an inanimate instrument. The execution of the action may produce a result. Specific action sub-type documentation specifies the exact expectation of each argument/role.\n\nSee also [blog post](https://blog.schema.org/2014/04/16/announcing-schema-org-actions/) and [Actions overview document](http://schema.org/docs/actions.html). |
| subclass | description |
|---|---|
| CommunicateAction | The act of conveying information to another person via a communication medium (instrument) such as speech, email, or telephone conversation. |
| BefriendAction | The act of forming a personal connection with someone (object) mutually/bidirectionally/symmetrically.\n\nRelated actions:\n\n* [[FollowAction]]: Unlike FollowAction, BefriendAction implies that the connection is reciprocal. |
| FollowAction | The act of forming a personal connection with someone/something (object) unidirectionally/asymmetrically to get updates polled from.\n\nRelated actions:\n\n* [[BefriendAction]]: Unlike BefriendAction, FollowAction implies that the connection is *not* necessarily reciprocal.\n* [[SubscribeAction]]: Unlike SubscribeAction, FollowAction implies that the follower acts as an active agent constantly/actively polling for updates.\n* [[RegisterAction]]: Unlike RegisterAction, FollowAction implies that the agent is interested in continuing receiving updates from the object.\n* [[JoinAction]]: Unlike JoinAction, FollowAction implies that the agent is interested in getting updates from the object.\n* [[TrackAction]]: Unlike TrackAction, FollowAction refers to the polling of updates of all aspects of animate objects rather than the location of inanimate objects (e.g. you track a package, but you don't follow it). |
| JoinAction | An agent joins an event/group with participants/friends at a location.\n\nRelated actions:\n\n* [[RegisterAction]]: Unlike RegisterAction, JoinAction refers to joining a group/team of people.\n* [[SubscribeAction]]: Unlike SubscribeAction, JoinAction does not imply that you'll be receiving updates.\n* [[FollowAction]]: Unlike FollowAction, JoinAction does not imply that you'll be polling for updates. |
| LeaveAction | An agent leaves an event / group with participants/friends at a location.\n\nRelated actions:\n\n* [[JoinAction]]: The antonym of LeaveAction.\n* [[UnRegisterAction]]: Unlike UnRegisterAction, LeaveAction implies leaving a group/team of people rather than a service. |
| MarryAction | The act of marrying a person. |
| RegisterAction | The act of registering to be a user of a service, product or web page.\n\nRelated actions:\n\n* [[JoinAction]]: Unlike JoinAction, RegisterAction implies you are registering to be a user of a service, *not* a group/team of people.\n* [[FollowAction]]: Unlike FollowAction, RegisterAction doesn't imply that the agent is expecting to poll for updates from the object.\n* [[SubscribeAction]]: Unlike SubscribeAction, RegisterAction doesn't imply that the agent is expecting updates from the object. |
| SubscribeAction | The act of forming a personal connection with someone/something (object) unidirectionally/asymmetrically to get updates pushed to.\n\nRelated actions:\n\n* [[FollowAction]]: Unlike FollowAction, SubscribeAction implies that the subscriber acts as a passive agent being constantly/actively pushed for updates.\n* [[RegisterAction]]: Unlike RegisterAction, SubscribeAction implies that the agent is interested in continuing receiving updates from the object.\n* [[JoinAction]]: Unlike JoinAction, SubscribeAction implies that the agent is interested in continuing receiving updates from the object. |
| UnRegisterAction | The act of un-registering from a service.\n\nRelated actions:\n\n* [[RegisterAction]]: antonym of UnRegisterAction.\n* [[LeaveAction]]: Unlike LeaveAction, UnRegisterAction implies that you are unregistering from a service you were previously registered, rather than leaving a team/group of people. |