What does GHz mean? How does it relate to ...

GHz implies 1 billion cycles per 2nd and when you discuss 2.4 GHz processor, you usually indicate that this is the optimal frequency of the clock to each core. n1 processor can, and in the PC/smartphone market generally does, have multiple cores that theoretically can have different clocks. AFAIK processors with identical cores like Intel 2 and 4 core processor have the same clock speed to each core.
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