text file vs computer file

text file and computer file both are nouns.

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

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

text file: (computer science) a computer file that contains text (and possibly formatting instructions) using seven-bit ASCII characters
computer file: (computer science) a file maintained in computer-readable form

text file (noun)	computer file (noun)
(computer science) a computer file that contains text (and possibly formatting instructions) using seven-bit ASCII characters	(computer science) a file maintained in computer-readable form