en rockfall (n)
― IsA ⟶
Weight: 1.0
en natural region (n) Source: OpenCyc 2012
en rockfall (n)
― IsA ⟶
Weight: 1.0
en land topographical feature (n) Source: OpenCyc 2012
en rockfall (n)
― IsA ⟶
Weight: 1.0
en group of stones (n) Source: OpenCyc 2012
en rockfall (n)
― IsA ⟶
Weight: 1.0
en natural inanimate thing (n) Source: OpenCyc 2012