How do slang and informal expressions contribute to effective communication?

How do slang and informal expressions contribute to effective communication?

Slang and informal expressions contribute to effective communication by adding a sense of familiarity and informality to conversations. They help to establish a connection between speakers and create a relaxed atmosphere. Additionally, slang and informal expressions can convey emotions, attitudes, and cultural references that may not be easily expressed through formal language. They also allow for more concise and efficient communication among individuals who are familiar with the slang or informal expressions being used.