Gwei is the one-billionth of one ETH (1 ETH is 1000,000,000 Gwei). It’s a denomination of ETH, also called a nanoether, due to its value relative to ETH. Essentially, Gwei is that fraction of ETH taken as its gas price.
Whale
They’re an influential personality in a crypto network (characterized by having huge capital whose decision can make or mare a project). For instance, a project