The word "惩恶扬善" is formed by concatenating two distinct verb-object compounds: "惩恶", meaning "punish evil", where 惩 is the verb "to punish" and 恶 is the object "evil", and "扬善", meaning "promote good", where 扬 is the verb "to promote" and 善 is the object "good". This results in a parallel four-character structure that directly combines these two actions into a single unified concept.