trial vs beta test

trial and beta test both are nouns.

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

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

trial: trying something to find out about it
beta test: (computer science) a second test of an experimental product (such as computer software) carried out by an outside organization

Other hyponyms of trial include field test, field trial, alpha test, road test, trial balloon.

trial (noun)	beta test (noun)
the act of testing something	(computer science) a second test of an experimental product (such as computer software) carried out by an outside organization
(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