unknown origin, possibly slavic, maybe somehow related with Latin crater = basin or ancient Greek "mixing bowl" - will do as mnemonic at least.
I was thinking, "Crătiță - Oh, this is the sound that stuff makes when you fry it in a saucepan."
It seems that in Duolingo cratiță is sometimes pot and some others saucepan
When I have such questions, I'll type the noun în Google images. The photos will show me what Romanians consider that noun to look like. And yes, same word for both concepts.