Amazonia rhymes with:
adonia, ansonia, antonia, caledonia, colonia, cydonia, diaphonia, donia, estonia, gastonia, gonia, harmonia, idonia, latonia, macedonia, madonia, new-caledonia, omonia, patagonia, petronia, philharmonia, rondonia, sidonia, sinfonia, slavonia, slovonia, sophronia, tonia, vernonia, vidonia
Amazonia sounds like:
ahmanson, amason, amazon, amazonian, amgen, amicone, amison, anacin, anasquan, ancona, angina, anguiano, animism, ankeney, ankeny, ankney, anscom, anshan, ansin, ansohn, anson, ansonia