Ero rhymes with:
argiro, aufiero, biro, carriero, casimiro, deniro, dipiero, dipierro, dipirro, fierro, guerriero, hero, hiro, kaneshiro, liro, masahiro, miro, miyashiro, morihiro, moruhiro, nero, niro, oshiro, pierro, piro, pirro, ramiro, ruggiero, santarsiero, sapiro, schiro, shapero, shapiro, shoichiro, spiro, subzero, tamashiro, tashiro, tesoriero, yamashiro, yoshiro, zero
Ero sounds like:
ear, eary, eerie, eir, er, era, ere, erie, eroh, err, erra, erria, error, erway, eure, euro, eury, ewer, eyer, eyewear, eyre, eyrie