On Tue, 6 Sep 2016 21:42:05 -0500, Dean Hoffman wrote:

A dozen roses in a corn field are a dozen weeds. A weed is any
plant out of place.

The way it works, technically, is that Rock is the big stuff that weathers
to stones, which is the small stuff, and, over time, stones weather to
"soil" which is a complex layered in-situ environment.

Once you displace that soil, then it becomes dirt.
So, dirt is merely soil that is not in situ anymore.

There's an entire concurrent thread on this distinction over he
https://groups.google.com/forum/#!fo....usage.english

The thread it titled:
Dirt is now soil; rock is not stone
https://groups.google.com/forum/#!to...sh/GvvXEfk9CyQ