different between pyrophane vs pyrophone

English

pyro- +? Ancient Greek ????? (phaín?, “I show or shine”)

pyrophane (countable and uncountable, plural pyrophanes)

(mineralogy) A mineral which is opaque in its natural state, but is said to change its color and become transparent by heat.

pyro- +? -phone

pyrophone (plural pyrophones)

(music) a musical instrument in which the sound is produced by flames of gas in tubes of different length

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