earth, ground, dust, dirt, territory
synonyms
rock
peat
compost
Spoil.
loess
Soot's plural is soot.
Another word for ground could be earth, soil, or solid.
earth's crust, soil layer, outer layer
I'm not sure if this is the word you are looking for but one is............... Scoria
Yes, the word soil is a noun, a word for a substance, a word for a thing. The word soil is also a verb (soil, soils, soiling, soiled), to become or make dirty.
Soil is a noun (the soil) and a verb (to soil).