population

All the inhabitants of a particular place; a group of organisms of the same species living in a given area; all the cases in a statistical study.

• populate/ˈpɒpjʊleɪt/(v)居住于；填充
• populous/ˈpɒpjʊləs/(adj)人口稠密的

• general population
• population growth
• aging population
• target population
• study population
• population decline

1. 1.Ageing populations in developed economies will place increasing strain on healthcare and pension systems over the coming decades.
2. 2.The study's findings apply to the general population rather than to any specific subgroup.

• inhabitants/ɪnˈhæbɪtənts/— people who live in a place
• residents/ˈrezɪdənts/— people who live somewhere
• community/kəˈmjuːnɪti/— a group of people

from Latin "populationem," from "populus" (the people)