When building in Vev, it's best to stick to a strict hierarchy or "anatomy" for your designs. This hierarchy is comprised of Sections, Elements, Add-ons, and Frames.
Sections are fundamental to your design – You can't build in Vev without them. Put simply, sections are full-width components that can extend the entire browser window as opposed to frames and elements which are only contained within the safe zone.
Elements are the building blocks of your canvas such as text, images, buttons, and more. They are essentially widgets that sit within your sections and can be anything from a simple text box to an interactive chart.
Breathe life into your design and content with options like animations and scroll speeds. Add-ons are enhancements that you can apply to your elements for additional functionality.
Frames are meant to organize and contain elements in order to make responsive design easier; they essentially segment your designs into smaller groups and can also function as a design tool to create more immersive and interactive behavior.