different between telegraphy vs kerite

English

tele- +? -graphy

telegraphy (usually uncountable, plural telegraphies)

communication at a distance by means of the telegraph, either over wires or by wireless telegraphy, usually using Morse code
the apparatus and techniques used in such a system

Ancient Greek [Term?] (“horn”) +? -ite

kerite (countable and uncountable, plural kerites)

A compound in which tar or asphalt combined with animal or vegetable oils is vulcanized by sulphur, the product closely resembling rubber; formerly used as an insulating material in telegraphy.

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