Opus is already the name of an audio codec.

Gemini is already the name of a Greek god, a constellation, a space mission, a crypto exchange, an astrological sign, a car, and a comic villain! How will we ever figure out which one someone is talking about?

Have you been living under a rock?

Opus: "an artistic work, especially one on a large scale."

The names Haiku, Sonnet, and Opus have not been chosen randomly.