[{"Bold_text": "noun", "List Items": ["Phonetics.a vowel, diphthong, triphthong, or vowel quality, as in a syllable.the system of vowels of a language.", "a vowel, diphthong, triphthong, or vowel quality, as in a syllable.", "the system of vowels of a language.", "the use of the voice, as in speech or song.", "the act, principles, or art of singing."]}]