master file vs computer file

master file and computer file both are nouns.

Word	Noun	Adjective	Verb	Adverb
master file	Yes	No	No	No
computer file	Yes	No	No	No

As nouns, computer file is a hypernym of master file; that is, computer file is a word with a broader meaning than master file:

master file: (computer science) a computer file that is used as the authority in a given job and that is relatively permanent
computer file: (computer science) a file maintained in computer-readable form

master file (noun)	computer file (noun)
(computer science) a computer file that is used as the authority in a given job and that is relatively permanent	(computer science) a file maintained in computer-readable form