Peat moss and Subsoil

Peat moss noun - Any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat.

Subsoil and peat moss are semantically related in ground topic. In some cases you can use "Subsoil" instead a noun phrase "Peat moss".

Subsoil noun - The layer of soil between the topsoil and bedrock.

Peat moss and subsoil are semantically related in ground topic. You can use "Peat moss" instead a noun "Subsoil".