Phonological Process
Various [see page 6, processes] as a consequence of phonology.
These vary the phonetic execution of a sound, but leave the phonemic interpretation of it unchanged.
Assimilation (Feature Spreading)
You replace one sound with another but you can't hear the difference.
Elision (deletion)
Sounds can go missing. I don't know -> I dunno.
Epenthesis (Insertion)
Shortening the gap between words using sounds. eg. Vanilla . Ice . Cream -> VanillarIceCream We use the [r] sound to buffer between the vanilla and ice words.
Reduction (Neutralised Vowel Quality)
You replace one vowel with another, but still seem to understand the implied meaning. eg. And -> Und