Below-ground is a term commonly used to describe features located beneath the surface of the earth. However, there are various other synonyms that can be used to describe the same concept. These include subterranean, underground, beneath the earth, subterraneous, beneath the surface, subsurface, subsoil, and base level. The use of these synonyms enhances the richness and diversity of language, preventing repetition and adding nuance to the description. These words can be used in various contexts, from geology and geography to architecture and construction, and their accurate selection is vital to convey the intended meaning precisely.