The difference between a population and a community is

population references only living things while community references living and non-living things.

population refers to multiple species at a time while community refers to a single species.

population references one species while community references all living species in an area.

population is measured over a duration of time while community is measured today.

The correct difference between a population and a community is that a population refers to a group of individuals of the same species living in the same area, while a community refers to all the populations of different species that live together in a particular habitat or ecosystem. In other words, a population is a subset of a community.