SOUP vs Tools vs Test

Just a sanity check here.
I know the term SOUP is really all about the "Unknown Provenance" bit (and I know within FDA scope they use OTS terminology instead and a more stringent set of info/activities needed to be provided/done)

but thirdparty software used e.g. to TEST your software and used to BUILD your software, that is not SOUP right? Aren't TOOLS separate from SOUP, I always though SOUP also meant "it's code that ends up INSIDE your software" and the stuff you use to test/build etc is a TOOL.

Tools should be risk assessed as appropriate with some kind of validation effort commensurate with their risk / criticality
but SOUP is handled according to 62304 including identifying, maintenance, updates, checking anomaly lists, fitting into your architecture etc etc.

Am I getting confused?
SOUP != TOOLS is how I've always understood it

You are correct.

I would subject software tools to a validation/assurance process that aligns with FDA’s draft guidance Computer Software Assurance for Production and Quality System Software. Although I will note that the guidance is only a draft, and it is light on development tools specifically.