The combination of all the scrum events made the scrum lifecycle. The best way to approach this lifecycle is with the depiction in image3 from scrum.org:
About the general definition of the scrum event the scrum guide report this:
The Sprint is a container for all other events. Each event in Scrum is a formal opportunity to inspect and adapt Scrum artifacts. These events are specifically designed to enable the transparency required. Failure to operate any events as prescribed results in lost opportunities to inspect and adapt. Events are used in Scrum to create regularity and to minimize the need for meetings not defined in Scrum.Scrum guide 2020 – Scrum Event
Optimally, all events are held at the same time and place to reduce complexity.