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This question already has an answer here:

what is the main difference between etherbase and coinbase? And what is the meaning of "uncle" in a transaction?

marked as duplicate by euri10, eth May 19 '16 at 7:59

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  • It is preferred if you can post separate questions instead of combining your questions into one. That way, it helps the people answering your question and also others hunting for at least one of your questions. Thanks! – eth May 19 '16 at 8:00
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Coinbase and Etherbase are the same, which is your default address where mining reward is going/credited in.

Uncle is a block that in bitcoin would be considered an orphan because its not on the longest chain (it's an alternative block at the same height as your parent). In some content I heard people refer it as family tree Dad and you are correct chain where uncle is almost correct but not accepted one.

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