gigabit vs computer memory unit

gigabit and computer memory unit both are nouns.

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

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

gigabit: a unit of information equal to 1000 megabits or 10^9 (1,000,000,000) bits
computer memory unit: a unit for measuring computer memory

gigabit (noun)	computer memory unit (noun)
a unit of information equal to 1000 megabits or 10^9 (1,000,000,000) bits	a unit for measuring computer memory