Hello everyone,

I am a Brazilian student, I really like studying English.
Well, I figured out that mother-tongue influence really can put a thing on the barbecue. So, I can't see any difference, in usage, between "stuff" and "thing". Is there a one?

For example, from google's dictionaries:

material: the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to ...

an artifact; "how does this thing work?"

Thanks in advance

First, stuff is uncountable noun, while thing is a countable noun.

We use stuff to intrinsically talk about unidentified mass of thing(s) / substances / materials.
We use thing to extrinsically address items we can discreetly identified in terms of quantity / measurements.
Thank you very much