@LucaNetz Eth has that it's called a wei, compared to Bitcoins satoshi.
Both being the smallest unit.
1 eth = 1,000,000,000,000,000,000 wei
1,000 wei = Kwei (babbage)
1,000,000 wei = mwei (lovelace)
1,000,000,000 wei = gwei (shannon) - which we use for gas fees