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Irestone vs Firestone - What's the difference?

irestone | firestone |

As nouns the difference between irestone and firestone

is that irestone is any very hard rock while firestone is iron pyrites, formerly used for striking fire.

As a proper noun Firestone is

{{surname}.

irestone

English

Noun

(en noun)
  • (mining) Any very hard rock.
    • (Webster 1913)

    firestone

    English

    Proper noun

    (en proper noun)
  • (surname)