Phonological, not orthographic: a final و or ی after a vowel letter is a glide. پیاو and چای end in consonants, while کوردی and دوو end in vowels.
Phonological, not orthographic: a final و or ی after a vowel letter is a glide. پیاو and چای end in consonants, while کوردی and دوو end in vowels.