audio file vs computer file

audio file and computer file both are nouns.

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

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

audio file: a computer file that contains digitized audio either in the Compact Disc (CDDA) format or in an MP3, AAC or other compressed format.
computer file: (computer science) a file maintained in computer-readable form

audio file (noun)	computer file (noun)
a computer file that contains digitized audio either in the Compact Disc (CDDA) format or in an MP3, AAC or other compressed format.	(computer science) a file maintained in computer-readable form