Pictures truly speak louder than voice. A picture can be used to represent a thousand words. Pictures express feelings, emotions, ideas, thoughts, better than voiced words. Pictures give a fast explanation about something than words. Also, people do not really find it easy to sit and read nowadays, but a good picture can easily capture the attention of a man. A picture will pass some pieces of information within a very short time, and with a deep understanding of the message passed.
But words take a long time in communicating or expressing its intentions, and it can be easily confusing if not well constructively passed to the hearer. Taking a younger mind point of reference, he or she understands better by pictures, rather than words, which he night even easily get tired of. Pictures are employed more in teaching the younger kids, even in schools. The higher educational levels also make use of pictures in simplifying complex ideas.