Six Sense-organs == 六根
see Six Indriyas.
Six Indriyas == 六根
or Six Internal Bases, or Six Sense-organs, or Six Places. They are eye, ear, nose, tongue, body and mind.
Six Roots == 六根
or Six Sense-organs, see Six Indriyas.
Six Places == 六根
Sanskrit word is Sadayatana. See Six Indriyas.