Phonology is concerned with sound struture, and phonological rules and principles. Phonemics is the study of a systematic discription of sounds while phonetics deals with concrete, directly observable aspectof sound in language. Phonemes are contrastive elements in the sound system in a language. Variants of a phoneme is referred to as allophones. A minimal pair is a pair of words that have the same number of sounds, but different sounds in the same position, making the two words different morphemes. Phonemes have distinctive features that make them easily recognizable and different from one another. Phonetic features include syllabic, consonantal, nasal, voiced, and strident, among othets. A syllable has a structure comprising an onset and a rhyme. The essential element of a syllable is the nucleus. Phonotactics studies the phoneme combinations allowed in a given language. Each language has specific sound arrangement or phonotactic rules. Morphophonemics is concerned with the surface forms of morphemes. A morpheme can have different phonetic variants called allomorphs.