Dialogs and popovers seem similar. How are they different?

This insightful article by web developer Hidde de Vries delves into the nuanced differences between dialogs, popovers, overlays, and disclosure widgets. While these interface elements may appear similar at first glance, de Vries skillfully outlines their distinguishing characteristics such as modality, dismissal methods, layer positioning, and focus constraints. Examples are provided for each pattern to illustrate proper usage. Developers will appreciate the technical details on implementing these concepts according to web standards. The thorough explanations and clear comparisons in this piece provide valuable guidance for creating intuitive, accessible experiences across platforms.