MOT test vs trial

MOT test and trial both are nouns.

Word	Noun	Adjective	Verb	Adverb
MOT test	Yes	No	No	No
trial	Yes	No	No	No

As nouns, trial is a hypernym of MOT test; that is, trial is a word with a broader meaning than MOT test:

MOT test: a compulsory annual test of older motor vehicles for safety and exhaust fumes
trial: the act of testing something

Other hypernyms of MOT test include run, test.

MOT test (noun)	trial (noun)
a compulsory annual test of older motor vehicles for safety and exhaust fumes	the act of testing something
	(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