In computer terminology, a Cloud is a gathering of loosely-related items with something in common. An example of such a phenomenon is a playground at a fast-food restaurant where several highways intersect. The kids aren't necessarily tied by ethnicity, nationality, age, sex, citizenship, home town, destination, nor 'herd'. The two commonalities are that they're all kids and all Homo Sapiens (although, they might seem like they are from Alpha Centauri).
A Tag Cloud is a grouping of terms that don't necessarily have any relationship to each other with regards to their meaning or context. The only factor that typically links the terms is that they are all related to the content on the same web site.
Tag Clouds are normally represented as a rectangular region in which the terms appear as different typefaces and font-sizes, so that each term stands out from its neighbor. We're going to use two types of Drupal Tag Clouds, which means that two different modules will be used in order...