From my understanding, all judgments are liens, but not all liens are judgments.
In Illinois, for instance, if there is a senior mortgage and a junior mortgage (junior because it was recorded after the first), the senior mortgage gets paid first at auction, and then anything left over goes to the junior mortgage, and any subsequent liens on the property.
Judgments in Illinois can only last 7 years before they have to be renewed, and then they can only be renewed once according to the statute of limitation. But a judgment on an individual that owns a house, is that a lien against them, the house or both? And when the house is foreclosed, does that lien stay with the house (if it's not paid off/extinguished with the money from the sale), or does it follow the previous owner?
There are no redemption rights for homeowners after the judicial sale, in Illinois. Only certain junior lienholders can redeem, such as the federal government for tax liens.