Sheet piling and Spile

Sheet piling noun - A pile in a row of piles driven side by side to retain earth or prevent seepage.

Spile and sheet piling are semantically related. In some cases you can use "Spile" instead a noun phrase "Sheet piling".

Spile noun - A column of wood or steel or concrete that is driven into the ground to provide support for a structure.

Sheet piling and spile are semantically related. Sometimes you can replace phrase "Sheet piling" with "Spile", this terms are similar.