nonverbal communication is contra with verbal communication..it more about our facial expression,body language,our voice,our walk and so on..it sometimes give us advantages..such as in conferences, we can use nonverbal communication to explain some task..beside that,when we want to give an information, we can use body language to send the message such as in tv..but however it can effect our presentation because we use more nonverbal communication..it can bother the audience and may occur the miscommunication there..beside that if we don't like other people it can show our impression and that person will know about our feeling..so nonverbal communication have some advantages and disadvantages to us..