The communication service can be classified into two categories:-

(a.) Mass communication

• The sender and the receiver may be a person, group or the whole population.
• It provides entertainment as well as creates awareness among the masses.
• The means of mass communication are : television, internet, radio ,newspaper etc.

(b.) Personal communication

• The sender and the receiver is a person.
• It is a necessary communication between individuals as man is a social animal.
• Means of personal communication are : mobile, social network site's, letters etc.

Roadways still have an edge over railways in India for the following reasons:

i. It is because it is still the most common means of transport in the country.

ii. The construction costs of roadways are much lower than the construction costs of railways.

iii. While it is difficult to lay down railway lines in hilly tracts or mountainous regions, roads can be easily built in dissecting tracts of land.

iv. Roads today connect even the smallest village to a large town. Railways have yet not been able to connect villages to cities.

v. Roadways are economical in transporting few people and a small quantity of goods over short distances. Roads provide a link between various railway stations.

Two inland waterways of India are-

(i) The Brahmaputra river between Sadiya and Dhubri.

(ii) The Ganga river between Allahabad and Haldia

(A) Characteristics of Brahmaputra river between Sadiya and Dhubri-

(i) The waterway is 891 km long.

(ii) It is also known as National Waterway No.2

(iii) It facilitates national security.

(B) Characteristics Ganga river between Allahabad and Haldia-

(i) It is known as National Waterway No.1

(ii) It is 1620 km long.

(iii) It provides pilgrimage.

Communication services can be classified into two categories—personal communication and mass communication.

i. Personal communication: It refers to communication between two or more people or among groups of people. Personal communication may take place through various means such as mobile, letters and social networking sites.

ii. Mass Communication: Mass communication is a means to provide people with information on current affairs, to create awareness among them and to entertain them. Some means of mass communication are radio, television, newspapers, magazines, books and films.