While working on new baby ‘Interface’ identified few difference between Events and interface.

EVENTS	INTERFACE
Select Events to Subscribe. Subscription optional.	All Methods are mandatory defined in interface code unit and need to implement all
Used to react	Used to Invoke.
Extensibility for few methods or functions	Extensibility for many methods.
All Subscribers are invoked	Only single code unit is invoked.
Can Invoke Interface.	Can bind events.

Hope this will help you..

Stay tuned for more.