Thanks to all who replied.
BobS...the reason I asked hear was more for direction on working with
wood to solve a landscaping problem.
Having taken shop classes in HS, I do recognize the distinction, but
felt there might be someone on here who uses wood to solve most
problems.
The other sites only talk about using cement, stones, or othe pre fab
type installations, which are not an option.
I will use wood, hence it will be a wood working project...in my mind.