WordPress blocks, part of the Gutenberg editor, are individual elements for building and structuring content within WordPress. They offer a user-friendly way to create content layouts but have limitations in design flexibility. On the other hand, page builders like Elementor and Beaver Builder are plugins providing more comprehensive and flexible design options. They come with a broader range of design elements and allow greater control over visual appearance and complex layouts. Essentially, while WordPress sections are basic and intuitive for content creation, page builders offer advanced design features for those needing more customization and control over their site’s aesthetics and functionality. The choice depends on your design complexity needs and skill level.