Elements, Compentents and Modules
Elements reside within components or stand alone within a section. These are typically paragraphs, heading, buttons, icons, etc.
Components contain a set of elements. Examples of this would cards, callout box, forms.
Modules contain elements and components. They will typically take up an entire section or most of it and should be built in such a way that it can be repeatedly used throughout the site or page. Modifications can be made to a module by changing a class or variable while still maintaining the overall look or function of the module.