Modifier letter turned comma
The modifier letter turned comma ʻ is a character found in Unicode resembling a comma that has been turned. Unlike a comma, it is a letter, not a piece of punctuation. It is used in a number of Polynesian alphabets as the letter ʻokina to represent the glottal stop, and in the Uzbek alphabet to form the letters Oʻ and Gʻ, which correspond to Ў and Ғ respectively in the Uzbek Cyrillic alphabet.