When transaction costs are quoted on the Ethereum blockchain they are done so in GWEI.
No, GWEI isn’t another cryptocurrency, it’s simply a very small denomination of the ETH cryptocurrency (equivalent to 0.000000001 ETH to be exact). Those deep in the depths of Ethereum oftentimes reference GWEI as a shannon after famed computer scientist Claude E. Shannon.
“I have to wait to use Ethereum because the transaction fees are crazy right now.”
“Really? How much are they?”
“It’s like 200 GWEI just to claim an NFT!”