MiB vs computer memory unit

MiB and computer memory unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
MiB	Yes	No	No	No
computer memory unit	Yes	No	No	No

As nouns, computer memory unit is a hypernym of MiB; that is, computer memory unit is a word with a broader meaning than MiB:

MiB: a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes
computer memory unit: a unit for measuring computer memory

MiB (noun)	computer memory unit (noun)
a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes	a unit for measuring computer memory