# Combine prism topics into the caustics tag?

Does anyone see reasons for or against the caustics tag including prism topics?

Caustics are not explicitly prism-rendering, but caustics are often prismatic in small degree.

Or, could we create a prism tag for following related topic?

• I like a group tag, but would be worried that someone may not find it. caustics and prisms are common search terms. Can we synonymize both of them to whatever is the group tag, so when someone types 'prism' for the tag, they see the group-tag + hint text? I'd try to add these, but I think my rep is too low – New Alexandria Oct 5 '19 at 16:48