A word cloud is an image made of words that together resemble a cloudy shape. People typically use word clouds to easily produce a summary of large documents (reports, speeches), to create art on a topic. A word cloud is a visual representation of text data, typically used to depict keyword metadata (tags) on websites, or to visualize free form text. Tags are usually single words. This format is useful for quickly perceiving the most prominent terms and for locating a term alphabetically to determine its relative prominence.