
An acquittal is a finding that the government did not prove beyond a reasonable doubt that you committed a crime. You are not subject to any punishment, probation or supervision. You do have to answer "yes" if you are asked if you have ever been arrested or charged with a crime. But you can answer "no" if you are asked if you have ever been convicted of a crime.
A conviction is a finding that the government has proven beyond a reasonable doubt that you committed a crime. Once you are convicted, you have to answer "yes" if you are asked if you have ever been convicted of a crime.
Conditional discharge is when someone is found guilty and the judge decides that instead of convicting them they will given them a "discharge," but with special conditions they must be abide by. If the conditions are satisfied the discharge becomes absolute and it's like you were acquitted. But, if you commit another offense while you are on conditional discharge you may be punished for both offenses.
A sentence is a punishment you are given after you are convicted of a crime. It can be: