keystone |
drystone |
As nouns the difference between keystone and drystone
is that
keystone is (architecture) the top stone of an arch while
drystone is (geology) a stalactite or stalagmite.
As an adjective drystone is
.
flagstone |
drystone |
As nouns the difference between flagstone and drystone
is that
flagstone is a flat, rectangular piece of rock or stone used for paving or roofing while
drystone is (geology) a stalactite or stalagmite.
As an adjective drystone is
.