Sometimes a single label lands like a hammer; other times it squeaks
hollow. I've seen activists yell 'down with the tyrant' and immediately light a crowd on fire, so clearly one synonym can embody a whole apparatus of repression when people bring memories, images, and grievances to the word. But I'm equally aware that words carry different freight across languages and communities. 'Tyrant' in one culture might evoke ancient monarchs, while in another a specific modern leader will fill that slot and change everything.
From a practical standpoint, precision matters. If you're trying to persuade a skeptical reader, calling a regime a 'tyranny' without explaining mechanisms—control of courts, media capture, disappearances—risks being dismissed as rhetoric. Conversely, in art and slogans, compressed language often does the heavy lifting: a single charged synonym can compress narrative, history, and emotion so the listener fills in the rest. I also think of translation issues: translators choose synonyms that carry local resonance; a word that screams oppression in one tongue can read blandly in another.
In short, one word can do remarkable work, but its effectiveness depends on context, audience, and the surrounding narrative. I tend to favor combining that sharp label with a few concrete details—letting the word open the door and the facts drag the room
into the light—because the combination feels truer to me.