Once upon a time, 2013, I took the largest English thesaurus I could find and crosslinked all the words until they were all used up. I started with the word “word”, found all the synonyms, the synonyms of the synonyms, etc until I ran out and ended up with five groups.
Not knowing what the call each of the groups, I sat on it for a year, and then I just dumped it on Amazon and later on archive for a free download.
Still don’t know what to do with it. I suspect I probably flattened out “semantic similarities” to an extreme by doing it that way, ending up with 5 natural breaks in English synonyms. But I dunno. It was fun. It was a weekend project.