Does the name W-ETH ring a bell? Just like the name implies, W-ETH means Wrapped ETH (Ether).
Have You Ever Heard Of W-ETH?
W-ETH enables users to trade ETH for Ethereum-based ERC20 tokens on decentralized platforms (dApps) such as Radar Relay.
WETH refers to "wrapped ETH". You need WETH as an intermediate to trade ETH for ERC20 tokens on DDEX (and many other platforms). Because decentralized platforms running on Ethereum use smart contracts to facilitate trades directly between users, every user needs to have the same standardized format for every token they trade. This ensures tokens do not get lost in translation.