Which grains are termed millets?

Other names include durra, Egyptian millet, feterita, Guinea corn, jwari ज्वारी (Marathi), jowar, juwar, milo, maize, shallu, Sudan grass, cholam (Tamil), jola (Kannada), jonnalu(Telugu), gaoliang (zh:高粱), great millet, kafir corn, dura, dari, mtama, and solam.