# Event ## Event Attributes | Attribute | Type | Description | Examples | Stability | |---|---|---|---|---| | `event.name` | string | Identifies the class / type of event. [1] | `browser.mouse.click`; `device.app.lifecycle` |  | **[1]:** Event names are subject to the same rules as [attribute names](https://github.com/open-telemetry/opentelemetry-specification/tree/v1.31.0/specification/common/attribute-naming.md). Notably, event names are namespaced to avoid collisions and provide a clean separation of semantics for events in separate domains like browser, mobile, and kubernetes.