attender vs audience

attender and audience both are nouns.

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

attender (noun)	audience (noun)
someone who waits on or tends to or attends to the needs of another	a conference (usually with someone important)
a person who is present and participates in a meeting	a gathering of spectators or listeners at a (usually public) performance
someone who listens attentively	the part of the general public interested in a source of information, entertainment, or a product/service
	an opportunity to state your case and be heard