Argentina's rhymes with:
argentinas, argentinas, argentinas, argentinas, argentinas, argentinas, tina's, arena's, arenas, argentinas, ballerinas, burkina's, delrina's, drina's, drinas, farinas, gina's, ginas, hercegovina's, herzegovina's, hyenas, katarina's, lena's, marinas, quina's, selena's, selinas, subpoenas, tina's, zenas
Argentina's sounds like:
airconditioning, airconditions, argentinas, argentines, argentinians