Living things are alive. They need nutrients, water, and air to sustain themselves. All living things need food to endure, and all have similar but vastly different ways of obtaining food. They might be carnivorous, consuming all meat, herbivorous, eating only plants, or omnivorous, doing both.
They also need a way of reproduction; otherwise, they would not exist.
Non-living things are most likely to be made by a living thing, for example, nests, toys, and cars. Non-living things are inanimate objects. It does not need to do what living things need to do.