-
compressible:material,
-
unstable:soil,
-
unsuitable:material,
-
common:soil,
-
rich:soil,
-
undesirable:material,
-
unusual:condition,
-
adsorbent:particle,
-
slippery:substrate,
-
common:contaminant,
-
soft:soil,
-
weak:formation,
-
soft:material,
-
tough:condition,
-
stable:rock,
Category Nuances for null:
-
unstable,
-
stable,
-
undesirable,
-
weak,
-
compressible,
-
adsorbent,
-
slippery,
-
tough,
-
rich,
-
soft,
-
common,
-
unusual,
-
unsuitable,
Simple Categories for null: