Nature, in the
broadest sense, is the natural, physical, or material world or universe.
"Nature" can refer to the phenomena of the
physical world, and also to life in general.
For example, manufactured objects and human interaction generally are
not considered part of nature, unless qualified as, for example, "human
nature" or "the whole of nature". Within the various uses of the
word today, "nature" often refers to geology and wildlife. Source