Word Cloud

Word Cloud (or Tag Cloud): a data visualization technique representing text data where word size directly correlates to its frequency or importance within the source material.

This technology is a powerful tool for text analytics: it processes a body of text, removes stop words (like 'the' or 'and'), and visually plots the remaining keywords. The core mechanism is frequency-weighting: the more a term appears, the larger and bolder it renders in the cloud. Applications are broad, spanning market research, content analysis, and social media monitoring; for example, quickly identifying the top 10 themes from 5,000 customer survey responses. The visual summary provides immediate insight, often improving text content theme understanding by up to 50% compared to reading raw data.

https://en.wikipedia.org/wiki/Tag_cloud