trial vs effort

trial and effort both are nouns.

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

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

trial: the act of testing something
effort: earnest and conscientious activity intended to do or accomplish something

Other hypernyms of trial include attempt, endeavor, endeavour, try.

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

trial: the act of undergoing testing
effort: earnest and conscientious activity intended to do or accomplish something

Other hypernyms of trial include attempt, endeavor, endeavour, try.

trial (noun)	effort (noun)
the act of testing something	earnest and conscientious activity intended to do or accomplish something
(law) the determination of a person's innocence or guilt by due process of law	use of physical or mental energy; hard work
the act of undergoing testing	a notable achievement
trying something to find out about it	a series of actions advancing a principle or tending toward a particular end
an annoying or frustrating or catastrophic event
(sports) a preliminary competition to determine qualifications