trial vs mistrial

trial and mistrial both are nouns.

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

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

trial: (law) the determination of a person's innocence or guilt by due process of law
mistrial: a trial that is invalid or inconclusive

Other hyponyms of trial include court-martial, ordeal, trial by ordeal, Scopes trial, show trial, retrial.

trial (noun)	mistrial (noun)
the act of testing something	a trial that is invalid or inconclusive
(law) the determination of a person's innocence or guilt by due process of law
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