Prominence measures how close the keyword appears of the beginning of the sentence. The closer to the beginning your targeted keyword appears, the higher the prominence will be, with a higher keyword prominence being favorable. Prominence applies to word in the title, web page body, META tags, Heading tags, and the alt-tags.
The degree to which user interface controls are noticed by the user. These include: Location (measured by where in the interface a control appears, e.g. menus, toolbars, etc.) Actions to activate (measured by the number user actions required) Emphasis (measured as size, color, volume, etc.)