ETH TOKEN

ETH is the native currency built on the Ethereum blockchain. 

ALT TOKEN
Every decentralised application is built on the Ethereum blockchain implements it's own form of Token based on ERC-2o Standard. 

W-ETH(Wrap ETH)

A smart contract which will generate WETH equals to ETH you transfer to that contract to allow trading on autonomous trustless exchanges. 

FYI : Mostly all the trustless exchanges works for ERC20  based tokens.