Difference between Diaeresis and Dieresis

What is the difference between Diaeresis and Dieresis?

Diaeresis as a noun is a diacritic placed over a vowel letter indicating that it is sounded separately, usually forming a distinct syllable, as in , , . while Dieresis as a noun is a diacritic ( ¨ ) placed over the second of two consecutive vowels to indicate that the second vowel is to be pronounced separately from the preceding vowel (as in the girls' given name of zoë). it does not indicate a diphthong, but rather that each vowel has its full quality, within the sound-context. now an uncommon practice in english, but still used in some other languages (e.g. french: , dutch: ).

We hope you now know whether to use Diaeresis or Dieresis in your sentence.