Pragmatics refers to the social context and appropriateness of language. It is the different ways of talking depending on who you are speaking to, what you should say, how you should say it and the medium you should use to communicate what you want to say. For example, if you were a child greeting a school principal you would say, "Good morning Mrs Perry.aE If you were greeting your best friend you would say, "Hey, Mary! Wotcha bin' up toaE Children are taught the pragmatics of language through watching their parents and other adults interacting, from an early age, and when they begin having conversations, children's language is monitored by adults, for appropriateness etc. At five years old, or thereabouts, a child has developed good control of elements of conversation.
Prelinguistic speech involves a child making sounds that can be compared to syllables in common words. Babbling and cooing are the two types of prelinguistic speech. Babbling comprises of consonant-vowel sounds, such as "taaE, "baaE and "daaE. Cooing is vowel s