Thank you very much for such a good and relevant question! 🌻
We make use of synonyms when people search for icons, but we currently only have them for the tags. That means, the icon set names don't get influenced by the synonym list we have in place. You can read an explanation of how the synonyms currently work in this article: https://blog.iconfinder.com/synonyms-in-search-1bbcf433c1b3
I will bring up your feedback about synonyms in set names to the Content team next week. It makes good sense indeed, but we need to first think it through.
And it's a good idea to share a list of synonyms here. Let me ask the team about that as well, to see if we can make it work.