Human overpopulation is the phenomenon where the number of people exceeds the carrying capacity of a particular area. This can lead to a myriad of problems such as resource depletion, environmental degradation, and increased poverty, among others. However, there are various synonyms for this term, such as overpopulation, population explosion, demographic catastrophe, overbearing humanity, ecological overshoot, human surplus, and population crisis. These terms all describe the same issue, which poses a challenge to global sustainability and requires urgent action to curb population growth through education, family planning, and sustainable development. The need for a concerted effort to address human overpopulation cannot be overstated, for the sake of future generations and the planet we call home.