Glossary
Gas
The unit measuring computational work on Ethereum, and the fee for it.
Every operation costs a set amount of gas, and users bid a price per unit. Total fee is gas used multiplied by gas price, so a complex contract call costs more than a simple transfer. Fees rise with demand for block space, not with the value being sent.
Related terms
Ethereum, Smart Contract, Proof of Stake, Layer 2, Rollup