Display words in the same cluster close to each other

[valearna]

Suggested by @chris-grove. This can't be done in the React word cloud component that we are currently using (https://www.npmjs.com/package/react-wordcloud), but it could be part of an alternative graph/bubble display. Here are some ideas:

https://observablehq.com/@d3/clustered-bubbles
https://github.com/crubier/react-graph-vis