A முற்று that spells everything out explicitly - the doer, the tool used, the place, the action, the object acted on, and the tense - all clear from the verb form itself.

A police report needs தெரிநிலை வினைமுற்று, spelling out exactly who did what and when, leaving nothing about the action ambiguous.

ஓவியர் ஓவியம் தீட்டினார் - who, what, and when are all explicit.