alpha test vs trial run

alpha test and trial run both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpha test	Yes	No	No	No
trial run	Yes	No	No	No

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

alpha test: (computer science) a first test of an experimental product (such as computer software) carried out by the developer
trial run: trying something to find out about it

Other hypernyms of alpha test include test, trial, tryout.

alpha test (noun)	trial run (noun)
(computer science) a first test of an experimental product (such as computer software) carried out by the developer	trying something to find out about it