The difference is between a civil action and criminal prosecution.
A civil action pits citizen vs. citizen (substitute org for citizen). The law limits the punishment one citizen can levy on another to monetary damages (and possibly a public apology). The proof standard is the preponderance of the evidence (>50% chance the alleged harm occurred).
Juries decide awards based on proportionality and cognizant of the respondent's ability to pay.
Criminal prosecution pits The People of the state against the individual charged with criminal offense. Punishments go well beyond $ fines, to include incarceration, and in the extreme, the death penalty. The proof standard is beyond a reasonable doubt, meaning there is no reasonable explanation for what happened other than criminal intent -- a much more rigorous proof standard than in a civil suit.