Good list! I thought that "orthogonal" and "tangential" was normal English. ("Orthogonal", "unrelated" and "independent" carry a bit different meanings to me, but then, "independent" has multiple meanings in math.)

Some people incorrectly use "Venn diagram" to mean "intersection". (Is "intersection" the normal word, or is it "common part"?)

You say that Euclidean means regular -- I see non-Euclidean used for: irregular ("my gender is non-Euclidean"), but also for incorrect ("non-Euclidean hands" in the context of AI art), scary/illogical/impossible to understand (Lovecraftian influence, although Lovecraft himself used it correctly), or for any kind of space that does not work as expected (mostly in video games/art, while non-Euclidean is a specific kind of such space -- better say "impossible space").