trial vs audition

trial and audition both are nouns.

Word	Noun	Adjective	Verb	Adverb
trial	Yes	No	No	No
audition	Yes	No	Yes	No

As nouns, audition is a hyponym of trial; that is, audition is a word with a more specific, narrower meaning than trial:

trial (noun)	audition (noun)
the act of testing something	a test of the suitability of a performer
(law) the determination of a person's innocence or guilt by due process of law	the ability to hear; the auditory faculty
the act of undergoing testing
trying something to find out about it
an annoying or frustrating or catastrophic event
(sports) a preliminary competition to determine qualifications

trial (verb)	audition (verb)
	perform in order to get a role