Semantic analysis tool allows you to find the most frequent phrases and frequencies of the words in the text. This tool analyzes the main SEO-parameters of the text, such as: text length, count of words, analysis of keyword density, "water" in the text (watery content).
Text for semantic analysis can be copied from the source code website and pasted into the field for analysis, or you can specify the site address and the analyzer will automatically load the content of the specified page.
To visualize the distribution of words in the text, a graph is constructed using which the naturalness of the text is estimated according to Zipf's law, based on a frequency analysis of the occurrence of words in the text. See Wikipedia for details.