Saturn and Uranus are the two planets. The characters 's', 'a', 'u', 'r', 'n' appear in both the spelling of both planets. Their spellings differ only by one character. Its 't' in Saturn whereas and additional 'u' in Uranus.
Saturn and Uranus are the two planets whose names are spelled with the same letters except one. a,n,r,s and u appears in both names. But 't' comes only in Saturn and not in Uranus.
Saturn and Uranus are the two planets spelled with almost the same letters. Except for the "t" in Saturn and the second "u" in Uranus, the letters are the same.