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from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun ’ (apostrophe) or ‛ (leading apostrophe)
• noun ‘ or ’ (both the opening and closing single quotation marks)
• noun ˈ (IPA primary stress)
• noun ʼ (IPA diacritic for ejective consonant)
• noun ׳ (Hebrew geresh)
• noun ʻ (Hawaiian okina).
• noun mathematics ′ (prime symbol)