1. a deadly, very contagious disease, carried by fleas and rats diffusion 2. a group of people who have recently moved to a new
area and who return to their original location during the same time period countermigration stream 3. the movement of a characteristic from one place to another over a period of time pandemic 4. a group of people who move from one area to another area during the same time period migration stream 5. a worldwide spread of a deadly disease, e.g., the plague bubonic plague
Both writing and singing are different kinds of art and they are trying to persuade people of something and bring about change in what people do, say or think. Therefore, changing society. I hope this answers your question! Sorry if I'm wrong.
