WETH is a DeFi-compatible version of ETH. ETH is the native currency of the Ethereum chain used for gas fees and security.
Wrapped ETH is a large-cap asset that represents the protocol's native governance or utility token. This asset is exposed to the underlying risks of Arbitrum bridge, a protocol rated as Best.
Wrapped ETH has an uncapped supply but has inflation control or burn mechanisms in place. ETH on Arbitrum is backed 1:1 by ETH locked in the Arbitrum bridge protocol on the Ethereum chain. ETH is "wrapped" to make it compatible with DeFi smart contracts. 1 Wrapped ETH is always equal to 1 ETH.
Wrapped ETH is highly correlated to the overall market.