Final answer:
A stalactite is a mineral formation found in caves, while a stenographer machine is a device used for transcription.
Step-by-step explanation:
A stalactite is a formation that hangs from the ceiling of a cave, typically made of minerals and formed over a long period of time through the process of deposition. On the other hand, a stenographer machine is a device used for transcribing speech into written format, typically used in courtrooms or for taking dictations. While stalactites are natural geological formations, stenographer machines are man-made tools for recording spoken words.
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