Population explosion refers to an uncontrollable increase in the number of people living in a particular area. There are several other terms that are interchangeable with population explosion. Some of the common synonyms include overpopulation, population boom, demographic explosion, population surge, demographic crisis, and population upsurge. These terms describe the rapid increase in human population which puts immense pressure on resources and infrastructure. The effects of population explosion can be seen in overcrowded cities, depletion of natural resources, environmental degradation, and scarcity of food and water. By using these synonyms, one can communicate the seriousness of the population issue and emphasize the need for sustainable development.