What made you want to look up corpus uteri? Please tell us where you read or heard it (including the quote, if possible).
Confession of judgment is a legal term that refers to a type of contract (or a clause with such a provision) in which a party agrees to let the other party enter a judgment against him or her.
Judgment(verb) the act of determining, as in courts of law, what is conformable to law and justice; also, the determination, decision, or sentence of a court, or of a judge; the mandate or sentence of God as the judge of all.