2.7 Phonological analysis
Phonetics is the study of speech sounds. It includes three main areas: articulatory phonetics, acoustic phonetics, and auditory phonetics. On the other hand, phonology studies the rules governing the structure, distribution, and sequencing of speech sounds and the shape of syllables. There is a fair degree of overlap in what concerns the two subjects, so sometimes it is hard to draw the boundary between them. Phonetics is the study of all possible speech sounds while phonology studies the way in which speakers of a language systematically use a selection of these sounds in order to express meaning. That is to say, phonology is concerned with the linguistic patterning of sounds in human languages, with its primary aim being to discover the principles that govern the way sounds are organized in languages, and to explain the variations that occur.
2.8 Phonemes and allophones
2.8.1 Minimal pairs
Minimal pairs are two words in a language which differ from each other by only one distinctive sound and which also differ in meaning. E.g. the English words tie and die are minimal pairs as they differ in meaning and in their initial phonemes /t/