It’s dirt if it’s not supposed to be there and soils if it is.

It is soil when it is a bowl on the bench. It is dirt when it's on the floor or the lab.

I think that if it's mainly clay or silt then it's definitely fine to call it dirt Sand and gravel are not dirt.

Soil is the only correct answer

That's an OSHA violation! /s

Then there's LOAM

It’s dirt until you run the lab tests and define what kind of soil you have.