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Limestone vs Keystone - What's the difference?

limestone | keystone |

As nouns the difference between limestone and keystone

is that limestone is an abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO₃); it occurs in a variety of forms, both crystalline and amorphous while keystone is the top stone of an arch.

As an adjective limestone

is made of or with limestone.

limestone

English

(wikipedia limestone)

Noun

  • (mineralogy) An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO?); it occurs in a variety of forms, both crystalline and amorphous.

    • Hyponyms

    * (mineralogy) bluestone, burrstone, calp, coquina, coral rag, chalk, malm, travertine, tufa

    See also

    * karst

    Adjective

    (-)
  • Made of or with limestone.
  • *
  • *:The house was a big elaborate limestone affair, evidently new. Winter sunshine sparkled on lace-hung casement, on glass marquise, and the burnished bronze foliations of grille and door.

    • Anagrams

    * milestone

    keystone

    English

    Noun

    (en noun)
  • (architecture) The top stone of an arch.
  • A native or resident of the American state of Pennsylvania.

    • Derived terms

    * keystone correction * keystone picture * keystone pricing

    Anagrams

    *