Comment by handojin

But this is a bit silly surely? If they are different ways of talking about the same thing then one might as well label oneself a 'mentalist' and say "physical processes don't 'have mental effects', they just flat out are mental processes."

I think what you're going for is a species of monism maybe? The idea that Thought and Extension are attributes of one Substance?

https://plato.stanford.edu/entries/spinoza-attributes/