Pronunciation refers to the way a word or a language is spoken, or the manner in which someone utters a word. If someone is said to have "correct pronunciation," then it refers to both within a particular dialect.
A word can be spoken in different ways by various individuals or groups, depending on many factors, such as: the area in which they grew up, the area in which they now live, if they have a speech or voice disorder, their ethnic group, their social class, or their education.
Syllables are counted as units of sound (phones) that they use in their language. The branch of linguistics which studies these units of sound is phonetics. Phones which play the same role are grouped together into classes called phonemes; the study of these is phonemics or phonematics or phonology. Phones as components of articulation are usually described using the International Phonetic Alphabet (IPA).
PRONUNCIATION (Lat. pronuntiatio, from pronuntiare, proclaim, announce, pronounce), the action of pronouncing, the manner of uttering an articulate vocal sound (see Phonetics and Voice). The original sense of the Latin, a public declaration, is preserved in Spanish pronunciamiento, a manifesto or proclamation, especially as issued by a party of insurrection or revolution.