Potential answers for "Medium's medium?"

⭐⭐⭐⭐ ESP
⭐⭐⭐ RADIO
⭐⭐⭐ PASYSTEM
⭐⭐⭐ AIRWAVE
⭐⭐⭐ NEON
⭐⭐⭐ OLOROSO
⭐⭐⭐ ICE

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