DIRECTIONS: Read the following passage and answer the questions that follows: PASSAGE - 2 Delhi, Dec. 23rd: In what may be called another ghastly accident, two school boys Ashish and Binu were brutally mowed down by a blueline bus operating in the Trilok Puri area. The boys who were on their way back home from school were walking down the road when a speeding bus, which had s verved from the opposite side, ran over the two boys. The boys died instantly. The crowd on the busy road immediately reacted and prevented the bus driver from making his escape. The angry mob pulled him out and beat him brutally. He is languishing in a hospital. Meanwhile, an FIR has been lodged with the local police station. The bus has been impounded and the driver's licence too has been confiscated. The SP Traffic has ordered an enquiry against the driver and the owner of the bus. The parents of the two boys are inconsolable. Words like 'crowd' and 'mob' have been used in the above passage. What is the difference between these two words?