I spent some 30 years of my life involved in archaeological excavations-- from 2 x 2 x 2 meter holes to 30 m below surface with the help of a back hoe.
What we excavated we always called "dirt" or maybe "backdirt". Maybe it was a reaction to those other guys who called themselves "soil scientists". Im not saying Im right, and you are wrong. Im just sayin' there might be a need for tolerance on this subject (!).
Paul2032. Nope I don't buy "potting soil" -- I make my own planting medium out of perlite, peat or fine pine bark mulch, and . . . dirt.