-
natural:assets,
-
important:thing,
-
undesirable:substance,
-
dense:layer,
-
geological:object,
-
geological:formation,
-
valuable:land,
-
geological:structure,
-
geologic:phenomenon,
-
individual:component,
-
corrosive:substance,
-
abrasive:substance,
-
tangible:assets,
-
geological:phenomenon,
-
foreign:matter,
-
additional:information,
-
geologic:formation,
-
geological:event,
-
concentrated:source,
-
hidden:earth,
-
under:earth,
-
residual:deposit,
-
aqueous:deposit,
Category Nuances for null:
-
geological,
-
valuable,
-
residual,
-
dense,
-
important,
-
abrasive,
-
corrosive,
-
foreign,
-
natural,
-
under,
-
geologic,
-
undesirable,
-
individual,
-
hidden,
-
tangible,
-
concentrated,
-
additional,
-
aqueous,
Simple Categories for null:
-
formation,
-
object,
-
structure,
-
substance,
-
assets,
-
component,
-
phenomenon,
-
deposit,
-
layer,
-
information,
-
source,
-
earth,
-
thing,
-
event,
-
matter,
-
land,