Other synonyms: absence, bankruptcy, blemish, damage, debit, decline, defect, defectiveness, delinquency,
If the blow were to say break his nose that is serious bodily injury and now you are looking at a Class B felony, Assault 2. If the blow was still serious and resulted in bodily injury but not as serious as an Assault 1 or 2 then you have a Class C felony, assault 3.
Blowing the nose very hard can cause further irritation inside the nose by dislodging mucus and possibly exposing these tiny vessels resulting in bleeding. If a person is getting frequent nosebleeds they may have tiny little clots that have formed that have stopped the bleeding previously.