disk file vs computer file

disk file and computer file both are nouns.

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

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

disk file: (computer science) a computer file stored on a magnetic disk and identified by a unique label
computer file: (computer science) a file maintained in computer-readable form

disk file (noun)	computer file (noun)
(computer science) a computer file stored on a magnetic disk and identified by a unique label	(computer science) a file maintained in computer-readable form