Final judgment and Last judgment

Final judgment noun - A judgment disposing of the case before the court; after the judgment (or an appeal from it) is rendered all that remains is to enforce the judgment.

Last judgment and final judgment are semantically related. In some cases you can use "Last judgment" instead a noun phrase "Final judgment".

Last judgment noun - (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives.

Final judgment and last judgment are semantically related. You can use "Final judgment" instead a noun phrase "Last judgment".