Lexipedia is a site designed to visually show relationships between words.
Simply type in a word. I used the word impact, which is a vocabulary word my fifth graders study.
You will then see a web of interconnected words. The colored dots signify parts of speech.
The left side of the screen provides definitions and more information on the words in the web.
Users can also turn off different parts of speech in the web to focus on certain words.