7.12   Communication

. Communication Communication is derived from the Latin word communicare, meaning ‘to share’. The act of conveying or exchanging information is called means of communication. They are: . Personal communication . Mass communication. Postal Districts and Headquarters in Tamil Nadu Zone /districts Headquarters Chennai Chennai Western Coimbatore Central Thiruchirapalli Southern Madurai NH - is the longest national highway in Tamil Nadu which runs from Hosur to Kanniyakumari ( . km ) Via Dharmapuri-Salem-Karur- Dindigul-Madurai-Tirunelveli. NH - is the shortest national highway in Tamil Nadu which runs from Madurai to Tuvarankuruchi. Not to Scale Not to Scale