noun, plural: non-living things
(1) Dead or not living
(2) Inanimate body or object
A thing is that which exists. It is a distinct entity, being, matter, or object. All things may be classified based on whether or not life is exhibited. Accordingly, they may either be living or non-living. A living thing is one that which possesses or exhibits life as opposed to a non-living thing that lacks life.
Examples of non-living things are rock, water, sand, glass, sun, etc. None of them shows the features of a living entity. A non-living thing is one that lacks or has stopped displaying the characteristics of life. Thus, they lack or no longer displaying the capability for growth, reproduction, respiration, metabolism, and movement. They also are not capable of responding to stimuli or evolve and adapt to their environment. They also do not require energy to continue existing. Though some non-living things seem to display growth, the process occurs by accretion and not by metabolic reactions characteristic of a living thing. Non-living things may also seem to be moving. However, the movement is due to an external influence.
A non-living thing is also that which used to be part of a living thing. For example, coal, wood, rubber, paper, etc. are considered as non-living things in spite of initially being a part of a living tree.