Affricate, A consonant sound produced by starting with a stop and releasing it into a fricative (e.g., "ts" in "cats")., Diachronic, Studying language change over time (e.g., how English pronunciation has evolved)., Etymology, The study of the origin and history of words., Grapheme, A written symbol representing a sound or unit in a writing system, Morphology, The study of how words are formed.

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