world vs audience

world and audience both are nouns.

Word	Noun	Adjective	Verb	Adverb
world	Yes	Yes	No	No
audience	Yes	No	No	No

world (noun)	audience (noun)
all of the living human inhabitants of the earth	a conference (usually with someone important)
all of your experiences that determine how things appear to you	a gathering of spectators or listeners at a (usually public) performance
the concerns of this life as distinguished from heaven and the afterlife	the part of the general public interested in a source of information, entertainment, or a product/service
people in general; especially a distinctive group of people with some shared interest	an opportunity to state your case and be heard
people in general considered as a whole
the 3rd planet from the sun; the planet we live on
everything that exists anywhere
a part of the earth that can be considered separately

world (adjective)	audience (adjective)
involving the entire earth; not limited or provincial in scope