Nature is the unabstracted entity of existence. Nature can be scoped by a qualifying word (e.g. the Nature of the biology of Earth, the Nature of Mathematics, the Nature of the mind, the Nature of emotions).
(uncountable) The natural world; consisting of all things unaffected by or predating human technology, production and design. e.g. the ecosystem, the natural environment, virgin ground, unmodified species, laws of nature.
The innate characteristics of a thing. What something will tend by its own constitution, to be or do. Distinct from what might be expected or intended.
The summary of everything that has to do with biological, chemical and physical states and events in the physical universe.
Conformity to that which is natural, as distinguished from that which is artificial, or forced, or remote from actual experience.
Kind, sort; character; quality.
(obsolete) Physical constitution or existence; the vital powers; the natural life.
(obsolete) Natural affection or reverence.
Nature, in the broadest sense, is equivalent to the natural, physical, or material world or universe. "Nature" refers to the phenomena of the physical world, and also to life in general. It ranges in scale from the subatomic to the cosmic.
Nature is a pattern that is applicable anywhere in Existence.