Yeah so the technical answer as I understand it is that the nodes validate the transactions/blocks by comparing their copy of the ledger to the new block broadcasted by the winning miner.

But for a block to be broadcasted, a valid nonce must first be discovered. To discover a nonce, miners must hash.

I think the confusion occurs because most miners are also nodes but not all nodes are miners.

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Simple way to explain:

Miners do the calculations and create blocks

Nodes keep the record and validate

Most miners are nodes

Most nodes aren't miners

Where can I go to learn more? I mean I can Google, but. If you got a favorite source….