Cryptocurrencies of the Ethereum Network.

Ether (ETH) is the Ethereum network’s native cryptocurrency that is currently the second-largest by market capitalization.

Gas is a unit of measuring the computational work of running transactions or smart contracts in the Ethereum network. This system is similar to the use of kilowatts (kW) for measuring electricity in your house; the electricity you use isn’t measured in dollars and cents but instead through kWH or Kilowatts per hour.

Gas Limit refers to the maximum amount of gas you’re willing to spend on a particular transaction. Higher gas limits mean that more computational work must be done to execute the smart contract. A standard ETH transfer requires a gas limit of 21,000 units of gas.

Gas Price refers to the amount of Ether you’re willing to pay for every unit of gas, and is usually measured in “Gwei.” An analogy for gas price—relating to the previous analogy for gas limits—is that it is similar to the cost of each liter of fuel that you’re paying for filling up your car.