Communicative styles refer to the level of formality in a person's language use, depending on factors like the audience, topic, purpose, and location of the communication. There are five main styles: frozen uses highly formal language appropriate for ceremonies; formal avoids slang and uses complete sentences for academic contexts; consultative is semi-formal for speaking to acquaintances; casual is informal conversational language for friends; and intimate is for very close relationships using specialized language. Knowing which style to use helps ensure effective communication with different audiences.