Sardinia rhymes with:
albinia, alenia, armenia, erminia, eugenia, herminia, neurasthenia, robinia, schizophrenia, slovenia, vaccinia, xenia, zinia
Sardinia sounds like:
sardina, sardine, sardinha, sartain, sartin, scardina, scardino, sciortino, scrotten, scrutiny, scruton, scrutton, secretion, seratonin, serotonin, sheraton, sheridan, shorten, sordoni, sortino, srdan