In plain words: Navigating from one LWC to another in Salesforce means programmatically redirecting the user to a target component or custom Lightning tab using the standard NavigationMixin service from the lightning/navigation module. In modern Salesforce applications, directing users between screens with custom state and parameters is essential. By applying the NavigationMixin class decorator to your Lightning Web Component, you can generate dynamic page references and trigger smooth page transitions directly inside Lightning Experience and the Salesforce Mobile App.
Topic
LWC
Lightning Web Components