Curious Chloride and Titanic Chloride
The trivial name for some curium compounds can be either curous or 'curious', so curium trichloride becomes curious chloride. However the only curious property it has is that it's sufficiently radioactive that a solution, if concentrated enough, will boil spontaneously after a while. (I wonder if a molecule with 2 Cm atoms in would be 'bi-curious'...?)
In a similar way, titanium compounds can be 'titanic', so we get the wonderfully named titanic chloride, TiCl4. It's also interesting to know that in the titanium industry, TiCl4 is known as 'tickle'. Furthermore, curium oxides are called 'curates', so the titanium compound would be Titanic Curate, and since curium can have more than one valency we could end up with Curious Curates. But I'm sure these are already a well-known phenomenon...
In a similar way, some nickel compounds can be referred to as 'nickelous' - so we get compounds like Nickelous Sulfate (a nice guy by all accounts...)