A tag cloud (also known as a word cloud, wordle or weighted list in visual design)
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Tag cloud or wordle is a visual representation of text data, which is often used to depict keyword metadata on websites, or to visualize free form text.
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A tag consists of two parts: a key and a value to identify a resource in a cloud environment
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Tag cloud or wordle are usually single words, and the importance of each tag is shown with font size or color
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the more a specific word appears in a source of textual data (such as a speech, blog post, or database), the bigger and bolder it appears in the word cloud
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Tagging in the cloud is a process where users can add descriptive metadata (tags) to their cloud infrastructure